Hi, Finally got around to trying DHCP this evening. A bit late to hit v3 I'm afraid, but I've unfortunately been too busy to spend much time looking at FreeRADIUS recently. I figured I'd get it to act as a simple DHCP server for my network, and try and put together a simple HOWTO. Or at least, I would have done if I'd got that far ;-) This is completely compiled from HEAD (61040c8fbd), using ./configure --enable-developer -C --prefix=/opt/fr3 Debian wheezy system: Linux elk 3.2.0-4-amd64 #1 SMP Debian 3.2.46-1 x86_64 GNU/Linux I removed sites-enabled/{default,inner-tunnel}, and symlinked in sites-available/dhcp, then edited it as follows to start with: listen { ipaddr = 81.187.50.101 port = 67 type = dhcp # interface = br0 broadcast = yes } (I set my local network config in the update reply sections, and set DHCP-Your-IP-Address with unlang in an if block for the MAC address.) =============================================================================== .... radiusd: #### Loading Virtual Servers #### server { # from file /opt/fr3/etc/raddb/radiusd.conf } # server server dhcp { # from file /opt/fr3/etc/raddb/sites-enabled/dhcp Module: Checking dhcp DHCP-Discover {...} for more modules to load Module: Checking dhcp DHCP-Request {...} for more modules to load Module: Checking dhcp (null) {...} for more modules to load } # server radiusd: #### Opening IP addresses and Ports #### listen { type = "dhcp" ipaddr = 81.187.50.101 port = 67 WARNING: No "interface" setting is defined. Only unicast DHCP will work. } Listening on dhcp address 81.187.50.101 port 67 as server dhcp Opening new proxy address * port 0 Listening on proxy address * port 54463 Ready to process requests. =============================================================================== This config, as noted by the warning about unicast only, did not work - it didn't see the broadcast packets. This is the only unsurprising result :-) Next - with as above, and also "interface = br0". This time, no warning about unicast only, but it still didn't see the broadcast packets. This doesn't surprise me entirely, as I've specifically set an IP address, but there is no warning. =============================================================================== .... radiusd: #### Loading Virtual Servers #### server { # from file /opt/fr3/etc/raddb/radiusd.conf } # server server dhcp { # from file /opt/fr3/etc/raddb/sites-enabled/dhcp Module: Checking dhcp DHCP-Discover {...} for more modules to load Module: Checking dhcp DHCP-Request {...} for more modules to load Module: Checking dhcp (null) {...} for more modules to load } # server radiusd: #### Opening IP addresses and Ports #### listen { type = "dhcp" ipaddr = 81.187.50.101 port = 67 } Listening on dhcp interface br0 address 81.187.50.101 port 67 as server dhcp Opening new proxy address * port 0 Listening on proxy address * port 35326 Ready to process requests. =============================================================================== Next I have "ipaddr = *" and again commented out the interface option (not expecting it necessarily to work - the warning appears again). This works fine until FR tries to send a reply, and we get a segfault. Complete radiusd -X output, in gdb: =============================================================================== root@elk:/opt/fr3/sbin# gdb --args ./radiusd -X GNU gdb (GDB) 7.4.1-debian Copyright (C) 2012 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /opt/fr3/sbin/radiusd...done. (gdb) run Starting program: /opt/fr3/sbin/radiusd -X [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". radiusd: FreeRADIUS Version 3.0.1 (git #61040c8), for host x86_64-unknown-linux-gnu, built on Oct 10 2013 at 21:03:18 Copyright (C) 1999-2013 The FreeRADIUS server project and contributors. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. You may redistribute copies of FreeRADIUS under the terms of the GNU General Public License. For more information about these matters, see the file named COPYRIGHT. Starting - reading configuration files ... including dictionary file /opt/fr3/etc/raddb/dictionary including configuration file /opt/fr3/etc/raddb/radiusd.conf including configuration file /opt/fr3/etc/raddb/proxy.conf including configuration file /opt/fr3/etc/raddb/clients.conf including files in directory /opt/fr3/etc/raddb/mods-enabled/ including configuration file /opt/fr3/etc/raddb/mods-enabled/unix including configuration file /opt/fr3/etc/raddb/mods-enabled/echo including configuration file /opt/fr3/etc/raddb/mods-enabled/dhcp including configuration file /opt/fr3/etc/raddb/mods-enabled/cache_eap including configuration file /opt/fr3/etc/raddb/mods-enabled/dynamic_clients including configuration file /opt/fr3/etc/raddb/mods-enabled/ntlm_auth including configuration file /opt/fr3/etc/raddb/mods-enabled/always including configuration file /opt/fr3/etc/raddb/mods-enabled/soh including configuration file /opt/fr3/etc/raddb/mods-enabled/logintime including configuration file /opt/fr3/etc/raddb/mods-enabled/replicate including configuration file /opt/fr3/etc/raddb/mods-enabled/radutmp including configuration file /opt/fr3/etc/raddb/mods-enabled/attr_filter including configuration file /opt/fr3/etc/raddb/mods-enabled/pap including configuration file /opt/fr3/etc/raddb/mods-enabled/passwd including configuration file /opt/fr3/etc/raddb/mods-enabled/utf8 including configuration file /opt/fr3/etc/raddb/mods-enabled/expiration including configuration file /opt/fr3/etc/raddb/mods-enabled/expr including configuration file /opt/fr3/etc/raddb/mods-enabled/realm including configuration file /opt/fr3/etc/raddb/mods-enabled/eap including configuration file /opt/fr3/etc/raddb/mods-enabled/linelog including configuration file /opt/fr3/etc/raddb/mods-enabled/preprocess including configuration file /opt/fr3/etc/raddb/mods-enabled/digest including configuration file /opt/fr3/etc/raddb/mods-enabled/detail including configuration file /opt/fr3/etc/raddb/mods-enabled/files including configuration file /opt/fr3/etc/raddb/mods-enabled/exec including configuration file /opt/fr3/etc/raddb/mods-enabled/sradutmp including configuration file /opt/fr3/etc/raddb/mods-enabled/detail.log including configuration file /opt/fr3/etc/raddb/mods-enabled/chap including configuration file /opt/fr3/etc/raddb/mods-enabled/mschap including files in directory /opt/fr3/etc/raddb/policy.d/ including configuration file /opt/fr3/etc/raddb/policy.d/operator-name including configuration file /opt/fr3/etc/raddb/policy.d/canonicalization including configuration file /opt/fr3/etc/raddb/policy.d/dhcp including configuration file /opt/fr3/etc/raddb/policy.d/cui including configuration file /opt/fr3/etc/raddb/policy.d/filter including configuration file /opt/fr3/etc/raddb/policy.d/eap including configuration file /opt/fr3/etc/raddb/policy.d/control including configuration file /opt/fr3/etc/raddb/policy.d/accounting including files in directory /opt/fr3/etc/raddb/sites-enabled/ including configuration file /opt/fr3/etc/raddb/sites-enabled/dhcp main { security { allow_core_dumps = no } } main { name = "radiusd" prefix = "/opt/fr3" localstatedir = "/opt/fr3/var" sbindir = "/opt/fr3/sbin" logdir = "/opt/fr3/var/log/radius" run_dir = "/opt/fr3/var/run/radiusd" libdir = "/opt/fr3/lib" radacctdir = "/opt/fr3/var/log/radius/radacct" hostname_lookups = no max_request_time = 30 cleanup_delay = 5 max_requests = 1024 pidfile = "/opt/fr3/var/run/radiusd/radiusd.pid" checkrad = "/opt/fr3/sbin/checkrad" debug_level = 0 proxy_requests = yes log { stripped_names = no auth = no auth_badpass = no auth_goodpass = no colourise = yes } security { max_attributes = 200 reject_delay = 1 status_server = yes } } radiusd: #### Loading Realms and Home Servers #### proxy server { retry_delay = 5 retry_count = 3 default_fallback = no dead_time = 120 wake_all_if_all_dead = no } home_server localhost { ipaddr = 127.0.0.1 port = 1812 type = "auth" secret = "testing123" response_window = 20 max_outstanding = 65536 zombie_period = 40 status_check = "status-server" ping_interval = 30 check_interval = 30 num_answers_to_alive = 3 revive_interval = 120 status_check_timeout = 4 coa { irt = 2 mrt = 16 mrc = 5 mrd = 30 } limit { max_connections = 16 max_requests = 0 lifetime = 0 idle_timeout = 0 } } home_server_pool my_auth_failover { type = fail-over home_server = localhost } realm example.com { auth_pool = my_auth_failover } realm LOCAL { } radiusd: #### Loading Clients #### client localhost { ipaddr = 127.0.0.1 require_message_authenticator = no secret = "testing123" nas_type = "other" proto = "*" limit { max_connections = 16 lifetime = 0 idle_timeout = 30 } } radiusd: #### Instantiating modules #### instantiate { } modules { # Loaded module rlm_unix # Instantiating module "unix" from file /opt/fr3/etc/raddb/mods-enabled/unix unix { radwtmp = "/opt/fr3/var/log/radius/radwtmp" } # Loaded module rlm_exec # Instantiating module "echo" from file /opt/fr3/etc/raddb/mods-enabled/echo exec echo { wait = yes program = "/bin/echo %{User-Name}" input_pairs = "request" output_pairs = "reply" shell_escape = yes } # Loaded module rlm_dhcp # Instantiating module "dhcp" from file /opt/fr3/etc/raddb/mods-enabled/dhcp # Loaded module rlm_cache # Instantiating module "cache_eap" from file /opt/fr3/etc/raddb/mods-enabled/cache_eap cache cache_eap { key = "%{%{control:State}:-%{%{reply:State}:-%{State}}}" ttl = 15 max_entries = 16384 epoch = 0 add_stats = no } # Loaded module rlm_dynamic_clients # Instantiating module "dynamic_clients" from file /opt/fr3/etc/raddb/mods-enabled/dynamic_clients # Instantiating module "ntlm_auth" from file /opt/fr3/etc/raddb/mods-enabled/ntlm_auth exec ntlm_auth { wait = yes program = "/path/to/ntlm_auth --request-nt-key --domain=MYDOMAIN --username=%{mschap:User-Name} --password=%{User-Password}" shell_escape = yes } # Loaded module rlm_always # Instantiating module "fail" from file /opt/fr3/etc/raddb/mods-enabled/always always fail { rcode = "fail" simulcount = 0 mpp = no } # Instantiating module "reject" from file /opt/fr3/etc/raddb/mods-enabled/always always reject { rcode = "reject" simulcount = 0 mpp = no } # Instantiating module "noop" from file /opt/fr3/etc/raddb/mods-enabled/always always noop { rcode = "noop" simulcount = 0 mpp = no } # Instantiating module "handled" from file /opt/fr3/etc/raddb/mods-enabled/always always handled { rcode = "handled" simulcount = 0 mpp = no } # Instantiating module "updated" from file /opt/fr3/etc/raddb/mods-enabled/always always updated { rcode = "updated" simulcount = 0 mpp = no } # Instantiating module "notfound" from file /opt/fr3/etc/raddb/mods-enabled/always always notfound { rcode = "notfound" simulcount = 0 mpp = no } # Instantiating module "ok" from file /opt/fr3/etc/raddb/mods-enabled/always always ok { rcode = "ok" simulcount = 0 mpp = no } # Loaded module rlm_soh # Instantiating module "soh" from file /opt/fr3/etc/raddb/mods-enabled/soh soh { dhcp = yes } # Loaded module rlm_logintime # Instantiating module "logintime" from file /opt/fr3/etc/raddb/mods-enabled/logintime logintime { minimum_timeout = 60 } # Loaded module rlm_replicate # Instantiating module "replicate" from file /opt/fr3/etc/raddb/mods-enabled/replicate # Loaded module rlm_radutmp # Instantiating module "radutmp" from file /opt/fr3/etc/raddb/mods-enabled/radutmp radutmp { filename = "/opt/fr3/var/log/radius/radutmp" username = "%{User-Name}" case_sensitive = yes check_with_nas = yes permissions = 384 caller_id = yes } # Loaded module rlm_attr_filter # Instantiating module "attr_filter.post-proxy" from file /opt/fr3/etc/raddb/mods-enabled/attr_filter attr_filter attr_filter.post-proxy { filename = "/opt/fr3/etc/raddb/mods-config/attr_filter/post-proxy" key = "%{Realm}" relaxed = no } reading pairlist file /opt/fr3/etc/raddb/mods-config/attr_filter/post-proxy # Instantiating module "attr_filter.pre-proxy" from file /opt/fr3/etc/raddb/mods-enabled/attr_filter attr_filter attr_filter.pre-proxy { filename = "/opt/fr3/etc/raddb/mods-config/attr_filter/pre-proxy" key = "%{Realm}" relaxed = no } reading pairlist file /opt/fr3/etc/raddb/mods-config/attr_filter/pre-proxy # Instantiating module "attr_filter.access_reject" from file /opt/fr3/etc/raddb/mods-enabled/attr_filter attr_filter attr_filter.access_reject { filename = "/opt/fr3/etc/raddb/mods-config/attr_filter/access_reject" key = "%{User-Name}" relaxed = no } reading pairlist file /opt/fr3/etc/raddb/mods-config/attr_filter/access_reject # Instantiating module "attr_filter.access_challenge" from file /opt/fr3/etc/raddb/mods-enabled/attr_filter attr_filter attr_filter.access_challenge { filename = "/opt/fr3/etc/raddb/mods-config/attr_filter/access_challenge" key = "%{User-Name}" relaxed = no } reading pairlist file /opt/fr3/etc/raddb/mods-config/attr_filter/access_challenge # Instantiating module "attr_filter.accounting_response" from file /opt/fr3/etc/raddb/mods-enabled/attr_filter attr_filter attr_filter.accounting_response { filename = "/opt/fr3/etc/raddb/mods-config/attr_filter/accounting_response" key = "%{User-Name}" relaxed = no } reading pairlist file /opt/fr3/etc/raddb/mods-config/attr_filter/accounting_response # Loaded module rlm_pap # Instantiating module "pap" from file /opt/fr3/etc/raddb/mods-enabled/pap pap { auto_header = no normalise = yes } # Loaded module rlm_passwd # Instantiating module "etc_passwd" from file /opt/fr3/etc/raddb/mods-enabled/passwd passwd etc_passwd { filename = "/etc/passwd" format = "*User-Name:Crypt-Password:" delimiter = ":" ignore_nislike = no ignore_empty = yes allow_multiple_keys = no hash_size = 100 } rlm_passwd: nfields: 3 keyfield 0(User-Name) listable: no # Loaded module rlm_utf8 # Instantiating module "utf8" from file /opt/fr3/etc/raddb/mods-enabled/utf8 # Loaded module rlm_expiration # Instantiating module "expiration" from file /opt/fr3/etc/raddb/mods-enabled/expiration # Loaded module rlm_expr # Instantiating module "expr" from file /opt/fr3/etc/raddb/mods-enabled/expr expr { safe_characters = "@abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.-_: /" } # Loaded module rlm_realm # Instantiating module "IPASS" from file /opt/fr3/etc/raddb/mods-enabled/realm realm IPASS { format = "prefix" delimiter = "/" ignore_default = no ignore_null = no } # Instantiating module "suffix" from file /opt/fr3/etc/raddb/mods-enabled/realm realm suffix { format = "suffix" delimiter = "@" ignore_default = no ignore_null = no } # Instantiating module "realmpercent" from file /opt/fr3/etc/raddb/mods-enabled/realm realm realmpercent { format = "suffix" delimiter = "%" ignore_default = no ignore_null = no } # Instantiating module "ntdomain" from file /opt/fr3/etc/raddb/mods-enabled/realm realm ntdomain { format = "prefix" delimiter = "\" ignore_default = no ignore_null = no } # Loaded module rlm_eap # Instantiating module "eap" from file /opt/fr3/etc/raddb/mods-enabled/eap eap { default_eap_type = "md5" timer_expire = 60 ignore_unknown_eap_types = no mod_accounting_username_bug = no max_sessions = 4096 } # Linked to sub-module rlm_eap_md5 # Linked to sub-module rlm_eap_leap # Linked to sub-module rlm_eap_gtc gtc { challenge = "Password: " auth_type = "PAP" } # Linked to sub-module rlm_eap_tls tls { tls = "tls-common" } tls-config tls-common { rsa_key_exchange = no dh_key_exchange = yes rsa_key_length = 512 dh_key_length = 512 verify_depth = 0 ca_path = "/opt/fr3/etc/raddb/certs" pem_file_type = yes private_key_file = "/opt/fr3/etc/raddb/certs/server.pem" certificate_file = "/opt/fr3/etc/raddb/certs/server.pem" ca_file = "/opt/fr3/etc/raddb/certs/ca.pem" private_key_password = "whatever" dh_file = "/opt/fr3/etc/raddb/certs/dh" fragment_size = 1024 include_length = yes check_crl = no cipher_list = "DEFAULT" ecdh_curve = "prime256v1" cache { enable = yes lifetime = 24 max_entries = 255 } verify { } ocsp { enable = no override_cert_url = yes url = "http://127.0.0.1/ocsp/" use_nonce = yes timeout = 0 softfail = yes } } # Linked to sub-module rlm_eap_ttls ttls { tls = "tls-common" default_eap_type = "md5" copy_request_to_tunnel = no use_tunneled_reply = no virtual_server = "inner-tunnel" include_length = yes require_client_cert = no } Using cached TLS configuration from previous invocation # Linked to sub-module rlm_eap_peap peap { tls = "tls-common" default_method = "mschapv2" copy_request_to_tunnel = no use_tunneled_reply = no proxy_tunneled_request_as_eap = yes virtual_server = "inner-tunnel" soh = no require_client_cert = no } Using cached TLS configuration from previous invocation # Linked to sub-module rlm_eap_mschapv2 mschapv2 { with_ntdomain_hack = no send_error = no } # Loaded module rlm_linelog # Instantiating module "linelog" from file /opt/fr3/etc/raddb/mods-enabled/linelog linelog { filename = "/opt/fr3/var/log/radius/linelog" permissions = 384 format = "This is a log message for %{User-Name}" reference = "%{%{Packet-Type}:-format}" } # Loaded module rlm_preprocess # Instantiating module "preprocess" from file /opt/fr3/etc/raddb/mods-enabled/preprocess preprocess { huntgroups = "/opt/fr3/etc/raddb/mods-config/preprocess/huntgroups" hints = "/opt/fr3/etc/raddb/mods-config/preprocess/hints" with_ascend_hack = no ascend_channels_per_line = 23 with_ntdomain_hack = no with_specialix_jetstream_hack = no with_cisco_vsa_hack = no with_alvarion_vsa_hack = no } reading pairlist file /opt/fr3/etc/raddb/mods-config/preprocess/huntgroups reading pairlist file /opt/fr3/etc/raddb/mods-config/preprocess/hints # Loaded module rlm_digest # Instantiating module "digest" from file /opt/fr3/etc/raddb/mods-enabled/digest # Loaded module rlm_detail # Instantiating module "detail" from file /opt/fr3/etc/raddb/mods-enabled/detail detail { filename = "/opt/fr3/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/detail-%Y%m%d" header = "%t" permissions = 384 dir_permissions = 493 locking = no log_packet_header = no } # Loaded module rlm_files # Instantiating module "files" from file /opt/fr3/etc/raddb/mods-enabled/files files { filename = "/opt/fr3/etc/raddb/mods-config/files/authorize" usersfile = "/opt/fr3/etc/raddb/mods-config/files/authorize" acctusersfile = "/opt/fr3/etc/raddb/mods-config/files/accounting" preproxy_usersfile = "/opt/fr3/etc/raddb/mods-config/files/pre-proxy" compat = "no" } reading pairlist file /opt/fr3/etc/raddb/mods-config/files/authorize reading pairlist file /opt/fr3/etc/raddb/mods-config/files/authorize reading pairlist file /opt/fr3/etc/raddb/mods-config/files/accounting reading pairlist file /opt/fr3/etc/raddb/mods-config/files/pre-proxy # Instantiating module "exec" from file /opt/fr3/etc/raddb/mods-enabled/exec exec { wait = no input_pairs = "request" shell_escape = yes } # Instantiating module "sradutmp" from file /opt/fr3/etc/raddb/mods-enabled/sradutmp radutmp sradutmp { filename = "/opt/fr3/var/log/radius/sradutmp" username = "%{User-Name}" case_sensitive = yes check_with_nas = yes permissions = 420 caller_id = no } # Instantiating module "auth_log" from file /opt/fr3/etc/raddb/mods-enabled/detail.log detail auth_log { filename = "/opt/fr3/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/auth-detail-%Y%m%d" header = "%t" permissions = 384 dir_permissions = 493 locking = no log_packet_header = no } # Instantiating module "reply_log" from file /opt/fr3/etc/raddb/mods-enabled/detail.log detail reply_log { filename = "/opt/fr3/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/reply-detail-%Y%m%d" header = "%t" permissions = 384 dir_permissions = 493 locking = no log_packet_header = no } # Instantiating module "pre_proxy_log" from file /opt/fr3/etc/raddb/mods-enabled/detail.log detail pre_proxy_log { filename = "/opt/fr3/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/pre-proxy-detail-%Y%m%d" header = "%t" permissions = 384 dir_permissions = 493 locking = no log_packet_header = no } # Instantiating module "post_proxy_log" from file /opt/fr3/etc/raddb/mods-enabled/detail.log detail post_proxy_log { filename = "/opt/fr3/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/post-proxy-detail-%Y%m%d" header = "%t" permissions = 384 dir_permissions = 493 locking = no log_packet_header = no } # Loaded module rlm_chap # Instantiating module "chap" from file /opt/fr3/etc/raddb/mods-enabled/chap # Loaded module rlm_mschap # Instantiating module "mschap" from file /opt/fr3/etc/raddb/mods-enabled/mschap mschap { use_mppe = yes require_encryption = no require_strong = no with_ntdomain_hack = yes passchange { } allow_retry = yes } } # modules radiusd: #### Loading Virtual Servers #### server { # from file /opt/fr3/etc/raddb/radiusd.conf } # server server dhcp { # from file /opt/fr3/etc/raddb/sites-enabled/dhcp Module: Checking dhcp DHCP-Discover {...} for more modules to load Module: Checking dhcp DHCP-Request {...} for more modules to load Module: Checking dhcp (null) {...} for more modules to load } # server radiusd: #### Opening IP addresses and Ports #### listen { type = "dhcp" ipaddr = * port = 67 WARNING: No "interface" setting is defined. Only unicast DHCP will work. } Listening on dhcp address * port 67 as server dhcp Opening new proxy address * port 0 Listening on proxy address * port 48075 Ready to process requests. Received DHCP-Request of id 070673d3 from 0.0.0.0:68 to 255.255.255.255:67 DHCP-Opcode = Client-Message DHCP-Hardware-Type = Ethernet DHCP-Hardware-Address-Length = 6 DHCP-Hop-Count = 0 DHCP-Transaction-Id = 117863379 DHCP-Number-of-Seconds = 0 DHCP-Flags = 0 DHCP-Client-IP-Address = 0.0.0.0 DHCP-Your-IP-Address = 0.0.0.0 DHCP-Server-IP-Address = 0.0.0.0 DHCP-Gateway-IP-Address = 0.0.0.0 DHCP-Client-Hardware-Address = 84:51:81:af:c6:09 DHCP-Message-Type += DHCP-Request DHCP-Client-Identifier += e0:2f:89:00:00:00 DHCP-Requested-IP-Address += 81.187.50.124 DHCP-DHCP-Maximum-Msg-Size += 1500 DHCP-Vendor-Class-Identifier += 'dhcpcd-5.5.6' DHCP-Hostname += 'android-c4225d1bbc9aee2f' DHCP-Parameter-Request-List += DHCP-Subnet-Mask DHCP-Parameter-Request-List += DHCP-Static-Routes DHCP-Parameter-Request-List += DHCP-Router-Address DHCP-Parameter-Request-List += DHCP-Domain-Name-Server DHCP-Parameter-Request-List += DHCP-Domain-Name DHCP-Parameter-Request-List += DHCP-Broadcast-Address DHCP-Parameter-Request-List += DHCP-IP-Address-Lease-Time DHCP-Parameter-Request-List += DHCP-Renewal-Time DHCP-Parameter-Request-List += DHCP-Rebinding-Time Trying sub-section dhcp DHCP-Request {...} (0) dhcp DHCP-Request { (0) update reply { (0) DHCP-Message-Type = DHCP-Ack (0) } # update reply = noop (0) update reply { (0) DHCP-Domain-Name-Server = 81.187.50.99 (0) DHCP-Domain-Name-Server = 81.187.50.101 (0) DHCP-Subnet-Mask = 255.255.255.192 (0) DHCP-Router-Address = 81.187.50.100 (0) DHCP-IP-Address-Lease-Time = 300 (0) DHCP-DHCP-Server-Identifier = 81.187.50.101 (0) } # update reply = noop (0) ? if ("%{DHCP-Client-Hardware-Address}" == "84:51:81:af:c6:09") (0) expand: "84:51:81:af:c6:09" -> '84:51:81:af:c6:09' (0) expand: "%{DHCP-Client-Hardware-Address}" -> '84:51:81:af:c6:09' (0) ? if ("%{DHCP-Client-Hardware-Address}" == "84:51:81:af:c6:09") -> TRUE (0) if ("%{DHCP-Client-Hardware-Address}" == "84:51:81:af:c6:09") { (0) update reply { (0) DHCP-Your-IP-Address = 81.187.50.124 (0) } # update reply = noop (0) } # if ("%{DHCP-Client-Hardware-Address}" == "84:51:81:af:c6:09") = noop (0) [ok] = ok (0) } # dhcp DHCP-Request = ok (0) DHCP: Reply will be sent unicast to your-ip-address Sending DHCP-Ack of id 070673d3 from 0.0.0.0:67 to 81.187.50.124:68 (0) Finished request 0. Waking up in 0.3 seconds. Waking up in 4.6 seconds. Received DHCP-Request of id 070673d3 from 0.0.0.0:68 to 255.255.255.255:67 Sending DHCP-Ack of id 070673d3 from 0.0.0.0:67 to 81.187.50.124:68 Waking up in 8.4 seconds. Received DHCP-Discover of id 3f2516a1 from 0.0.0.0:68 to 255.255.255.255:67 DHCP-Opcode = Client-Message DHCP-Hardware-Type = Ethernet DHCP-Hardware-Address-Length = 6 DHCP-Hop-Count = 0 DHCP-Transaction-Id = 1059395233 DHCP-Number-of-Seconds = 4 DHCP-Flags = 0 DHCP-Client-IP-Address = 0.0.0.0 DHCP-Your-IP-Address = 0.0.0.0 DHCP-Server-IP-Address = 0.0.0.0 DHCP-Gateway-IP-Address = 0.0.0.0 DHCP-Client-Hardware-Address = 84:51:81:af:c6:09 DHCP-Message-Type += DHCP-Discover DHCP-Client-Identifier += a0:39:89:00:00:00 DHCP-DHCP-Maximum-Msg-Size += 1500 DHCP-Vendor-Class-Identifier += 'dhcpcd-5.5.6' DHCP-Hostname += 'android-c4225d1bbc9aee2f' DHCP-Parameter-Request-List += DHCP-Subnet-Mask DHCP-Parameter-Request-List += DHCP-Static-Routes DHCP-Parameter-Request-List += DHCP-Router-Address DHCP-Parameter-Request-List += DHCP-Domain-Name-Server DHCP-Parameter-Request-List += DHCP-Domain-Name DHCP-Parameter-Request-List += DHCP-Broadcast-Address DHCP-Parameter-Request-List += DHCP-IP-Address-Lease-Time DHCP-Parameter-Request-List += DHCP-Renewal-Time DHCP-Parameter-Request-List += DHCP-Rebinding-Time Trying sub-section dhcp DHCP-Discover {...} (1) dhcp DHCP-Discover { (1) update reply { (1) DHCP-Message-Type = DHCP-Offer (1) } # update reply = noop (1) update reply { (1) DHCP-Domain-Name-Server = 81.187.50.99 (1) DHCP-Domain-Name-Server = 81.187.50.101 (1) DHCP-Subnet-Mask = 255.255.255.192 (1) DHCP-Router-Address = 81.187.50.100 (1) DHCP-IP-Address-Lease-Time = 300 (1) DHCP-DHCP-Server-Identifier = 81.187.50.101 (1) } # update reply = noop (1) ? if ("%{DHCP-Client-Hardware-Address}" == "84:51:81:af:c6:09") (1) expand: "84:51:81:af:c6:09" -> '84:51:81:af:c6:09' (1) expand: "%{DHCP-Client-Hardware-Address}" -> '84:51:81:af:c6:09' (1) ? if ("%{DHCP-Client-Hardware-Address}" == "84:51:81:af:c6:09") -> TRUE (1) if ("%{DHCP-Client-Hardware-Address}" == "84:51:81:af:c6:09") { (1) update reply { (1) DHCP-Your-IP-Address = 81.187.50.124 (1) } # update reply = noop (1) } # if ("%{DHCP-Client-Hardware-Address}" == "84:51:81:af:c6:09") = noop (1) [ok] = ok (1) } # dhcp DHCP-Discover = ok (1) DHCP: Reply will be sent unicast to your-ip-address Program received signal SIGSEGV, Segmentation fault. 0x00007ffff735a56b in strlcpy (dst=0x7fffffffe5f4 "", src=0x0, siz=16) at src/lib/strlcpy.c:47 47 if ((*d++ = *s++) == 0) (gdb) (gdb) (gdb) (gdb) (gdb) bt #0 0x00007ffff735a56b in strlcpy (dst=0x7fffffffe5f4 "", src=0x0, siz=16) at src/lib/strlcpy.c:47 #1 0x00007ffff13c7988 in fr_dhcp_add_arp_entry (fd=7, interface=0x0, macaddr=0x8950b0, ip=0x894920) at src/modules/proto_dhcp/dhcp.c:1526 #2 0x00007ffff13c40d9 in dhcp_process (request=0x892d30) at src/modules/proto_dhcp/dhcpd.c:507 #3 0x0000000000432b42 in request_running (request=0x892d30, action=1) at src/main/process.c:1210 #4 0x0000000000431dbe in request_queue_or_run (request=0x892d30, process=0x432a78 <request_running>) at src/main/process.c:849 #5 0x0000000000433235 in request_receive (listener=0x8913e0, packet=0x892640, client=0x891548, fun=0x7ffff13c379f <dhcp_process>) at src/main/process.c:1409 #6 0x00007ffff13c456f in dhcp_socket_recv (listener=0x8913e0) at src/modules/proto_dhcp/dhcpd.c:629 #7 0x0000000000438b2b in event_socket_handler (xel=0x87b3b0, fd=7, ctx=0x8913e0) at src/main/process.c:3494 #8 0x00007ffff736279b in fr_event_loop (el=0x87b3b0) at src/lib/event.c:414 #9 0x0000000000439cb8 in radius_event_process () at src/main/process.c:4211 #10 0x0000000000428335 in main (argc=2, argv=0x7fffffffec18) at src/main/radiusd.c:473 (gdb) quit A debugging session is active. Inferior 1 [process 7992] will be killed. Quit anyway? (y or n) y root@elk:/opt/fr3/sbin# =============================================================================== The segfault comes from sock->interface not being set. I've not dug to find out where/if this should be set (I'm guessing from the incoming interface, rather than the config?) Finally, I tried the remaining option - ipaddr = * and interface = br0. This time, the server seems to react and respond as I would expect. However, tcpdump/wireshark confirm that there is no actual data in any packets that are sent. (Note it also doesn't show the interface or broadcast options in the debug output listen section shown below.) =============================================================================== .... radiusd: #### Loading Virtual Servers #### server { # from file /opt/fr3/etc/raddb/radiusd.conf } # server server dhcp { # from file /opt/fr3/etc/raddb/sites-enabled/dhcp Module: Checking dhcp DHCP-Discover {...} for more modules to load Module: Checking dhcp DHCP-Request {...} for more modules to load Module: Checking dhcp (null) {...} for more modules to load } # server radiusd: #### Opening IP addresses and Ports #### listen { type = "dhcp" ipaddr = * port = 67 } Listening on dhcp interface br0 address * port 67 as server dhcp Opening new proxy address * port 0 Listening on proxy address * port 46919 Ready to process requests. Received DHCP-Request of id 34565f7b from 0.0.0.0:68 to 255.255.255.255:67 DHCP-Opcode = Client-Message DHCP-Hardware-Type = Ethernet DHCP-Hardware-Address-Length = 6 DHCP-Hop-Count = 0 DHCP-Transaction-Id = 878075771 DHCP-Number-of-Seconds = 0 DHCP-Flags = 0 DHCP-Client-IP-Address = 0.0.0.0 DHCP-Your-IP-Address = 0.0.0.0 DHCP-Server-IP-Address = 0.0.0.0 DHCP-Gateway-IP-Address = 0.0.0.0 DHCP-Client-Hardware-Address = 84:51:81:af:c6:09 DHCP-Message-Type += DHCP-Request DHCP-Client-Identifier += 80:21:52:01:00:00 DHCP-Requested-IP-Address += 81.187.50.124 DHCP-DHCP-Maximum-Msg-Size += 1500 DHCP-Vendor-Class-Identifier += 'dhcpcd-5.5.6' DHCP-Hostname += 'android-c4225d1bbc9aee2f' DHCP-Parameter-Request-List += DHCP-Subnet-Mask DHCP-Parameter-Request-List += DHCP-Static-Routes DHCP-Parameter-Request-List += DHCP-Router-Address DHCP-Parameter-Request-List += DHCP-Domain-Name-Server DHCP-Parameter-Request-List += DHCP-Domain-Name DHCP-Parameter-Request-List += DHCP-Broadcast-Address DHCP-Parameter-Request-List += DHCP-IP-Address-Lease-Time DHCP-Parameter-Request-List += DHCP-Renewal-Time DHCP-Parameter-Request-List += DHCP-Rebinding-Time Trying sub-section dhcp DHCP-Request {...} (0) dhcp DHCP-Request { (0) update reply { (0) DHCP-Message-Type = DHCP-Ack (0) } # update reply = noop (0) update reply { (0) DHCP-Domain-Name-Server = 81.187.50.99 (0) DHCP-Domain-Name-Server = 81.187.50.101 (0) DHCP-Subnet-Mask = 255.255.255.192 (0) DHCP-Router-Address = 81.187.50.100 (0) DHCP-IP-Address-Lease-Time = 300 (0) DHCP-DHCP-Server-Identifier = 81.187.50.101 (0) } # update reply = noop (0) ? if ("%{DHCP-Client-Hardware-Address}" == "84:51:81:af:c6:09") (0) expand: "84:51:81:af:c6:09" -> '84:51:81:af:c6:09' (0) expand: "%{DHCP-Client-Hardware-Address}" -> '84:51:81:af:c6:09' (0) ? if ("%{DHCP-Client-Hardware-Address}" == "84:51:81:af:c6:09") -> TRUE (0) if ("%{DHCP-Client-Hardware-Address}" == "84:51:81:af:c6:09") { (0) update reply { (0) DHCP-Your-IP-Address = 81.187.50.124 (0) } # update reply = noop (0) } # if ("%{DHCP-Client-Hardware-Address}" == "84:51:81:af:c6:09") = noop (0) [ok] = ok (0) } # dhcp DHCP-Request = ok (0) DHCP: Reply will be sent unicast to your-ip-address Sending DHCP-Ack of id 34565f7b from 0.0.0.0:67 to 81.187.50.124:68 (0) Finished request 0. Waking up in 0.3 seconds. Waking up in 4.6 seconds. Received DHCP-Request of id 34565f7b from 0.0.0.0:68 to 255.255.255.255:67 Sending DHCP-Ack of id 34565f7b from 0.0.0.0:67 to 81.187.50.124:68 Waking up in 7.4 seconds. Received DHCP-Discover of id 06d6253a from 0.0.0.0:68 to 255.255.255.255:67 DHCP-Opcode = Client-Message DHCP-Hardware-Type = Ethernet DHCP-Hardware-Address-Length = 6 DHCP-Hop-Count = 0 DHCP-Transaction-Id = 114697530 DHCP-Number-of-Seconds = 4 DHCP-Flags = 0 DHCP-Client-IP-Address = 0.0.0.0 DHCP-Your-IP-Address = 0.0.0.0 DHCP-Server-IP-Address = 0.0.0.0 DHCP-Gateway-IP-Address = 0.0.0.0 DHCP-Client-Hardware-Address = 84:51:81:af:c6:09 DHCP-Message-Type += DHCP-Discover DHCP-Client-Identifier += 40:2b:52:01:00:00 DHCP-DHCP-Maximum-Msg-Size += 1500 DHCP-Vendor-Class-Identifier += 'dhcpcd-5.5.6' DHCP-Hostname += 'android-c4225d1bbc9aee2f' DHCP-Parameter-Request-List += DHCP-Subnet-Mask DHCP-Parameter-Request-List += DHCP-Static-Routes DHCP-Parameter-Request-List += DHCP-Router-Address DHCP-Parameter-Request-List += DHCP-Domain-Name-Server DHCP-Parameter-Request-List += DHCP-Domain-Name DHCP-Parameter-Request-List += DHCP-Broadcast-Address DHCP-Parameter-Request-List += DHCP-IP-Address-Lease-Time DHCP-Parameter-Request-List += DHCP-Renewal-Time DHCP-Parameter-Request-List += DHCP-Rebinding-Time Trying sub-section dhcp DHCP-Discover {...} (1) dhcp DHCP-Discover { (1) update reply { (1) DHCP-Message-Type = DHCP-Offer (1) } # update reply = noop (1) update reply { (1) DHCP-Domain-Name-Server = 81.187.50.99 (1) DHCP-Domain-Name-Server = 81.187.50.101 (1) DHCP-Subnet-Mask = 255.255.255.192 (1) DHCP-Router-Address = 81.187.50.100 (1) DHCP-IP-Address-Lease-Time = 300 (1) DHCP-DHCP-Server-Identifier = 81.187.50.101 (1) } # update reply = noop (1) ? if ("%{DHCP-Client-Hardware-Address}" == "84:51:81:af:c6:09") (1) expand: "84:51:81:af:c6:09" -> '84:51:81:af:c6:09' (1) expand: "%{DHCP-Client-Hardware-Address}" -> '84:51:81:af:c6:09' (1) ? if ("%{DHCP-Client-Hardware-Address}" == "84:51:81:af:c6:09") -> TRUE (1) if ("%{DHCP-Client-Hardware-Address}" == "84:51:81:af:c6:09") { (1) update reply { (1) DHCP-Your-IP-Address = 81.187.50.124 (1) } # update reply = noop (1) } # if ("%{DHCP-Client-Hardware-Address}" == "84:51:81:af:c6:09") = noop (1) [ok] = ok (1) } # dhcp DHCP-Discover = ok (1) DHCP: Reply will be sent unicast to your-ip-address Sending DHCP-Offer of id 06d6253a from 0.0.0.0:67 to 81.187.50.124:68 (1) Finished request 1. Waking up in 0.3 seconds. Waking up in 4.6 seconds. Received DHCP-Discover of id 06d6253a from 0.0.0.0:68 to 255.255.255.255:67 Sending DHCP-Offer of id 06d6253a from 0.0.0.0:67 to 81.187.50.124:68 Waking up in 1.4 seconds. (0) Cleaning up request packet ID 878075771 with timestamp +72 Waking up in 3.9 seconds. (1) Cleaning up request packet ID 114697530 with timestamp +76 Ready to process requests. =============================================================================== tcpdump output captured at the same time as the above looks like: =============================================================================== 23:52:02.049560 84:51:81:af:c6:09 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 356: (tos 0x0, ttl 64, id 59810, offset 0, flags [none], proto UDP (17), length 342) 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 84:51:81:af:c6:09, length 314, xid 0x34565f7b, Flags [none] Client-Ethernet-Address 84:51:81:af:c6:09 Vendor-rfc1048 Extensions Magic Cookie 0x63825363 DHCP-Message Option 53, length 1: Request Client-ID Option 61, length 7: ether 84:51:81:af:c6:09 Requested-IP Option 50, length 4: 81.187.50.124 MSZ Option 57, length 2: 1500 Vendor-Class Option 60, length 12: "dhcpcd-5.5.6" Hostname Option 12, length 24: "android-c4225d1bbc9aee2f" Parameter-Request Option 55, length 9: Subnet-Mask, Static-Route, Default-Gateway, Domain-Name-Server Domain-Name, BR, Lease-Time, RN RB 23:52:04.594247 84:51:81:af:c6:09 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 356: (tos 0x0, ttl 64, id 21472, offset 0, flags [none], proto UDP (17), length 342) 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 84:51:81:af:c6:09, length 314, xid 0x34565f7b, secs 3, Flags [none] Client-Ethernet-Address 84:51:81:af:c6:09 Vendor-rfc1048 Extensions Magic Cookie 0x63825363 DHCP-Message Option 53, length 1: Request Client-ID Option 61, length 7: ether 84:51:81:af:c6:09 Requested-IP Option 50, length 4: 81.187.50.124 MSZ Option 57, length 2: 1500 Vendor-Class Option 60, length 12: "dhcpcd-5.5.6" Hostname Option 12, length 24: "android-c4225d1bbc9aee2f" Parameter-Request Option 55, length 9: Subnet-Mask, Static-Route, Default-Gateway, Domain-Name-Server Domain-Name, BR, Lease-Time, RN RB 23:52:06.018481 84:51:81:af:c6:09 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 350: (tos 0x0, ttl 64, id 2980, offset 0, flags [none], proto UDP (17), length 336) 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 84:51:81:af:c6:09, length 308, xid 0x6d6253a, secs 4, Flags [none] Client-Ethernet-Address 84:51:81:af:c6:09 Vendor-rfc1048 Extensions Magic Cookie 0x63825363 DHCP-Message Option 53, length 1: Discover Client-ID Option 61, length 7: ether 84:51:81:af:c6:09 MSZ Option 57, length 2: 1500 Vendor-Class Option 60, length 12: "dhcpcd-5.5.6" Hostname Option 12, length 24: "android-c4225d1bbc9aee2f" Parameter-Request Option 55, length 9: Subnet-Mask, Static-Route, Default-Gateway, Domain-Name-Server Domain-Name, BR, Lease-Time, RN RB 23:52:06.019153 68:05:ca:06:81:3d > 84:51:81:af:c6:09, ethertype IPv4 (0x0800), length 42: (tos 0x0, ttl 64, id 63857, offset 0, flags [none], proto UDP (17), length 28) 81.187.50.101.67 > 81.187.50.124.68: [|bootp] 23:52:10.641952 84:51:81:af:c6:09 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 350: (tos 0x0, ttl 64, id 44791, offset 0, flags [none], proto UDP (17), length 336) 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 84:51:81:af:c6:09, length 308, xid 0x6d6253a, secs 9, Flags [none] Client-Ethernet-Address 84:51:81:af:c6:09 Vendor-rfc1048 Extensions Magic Cookie 0x63825363 DHCP-Message Option 53, length 1: Discover Client-ID Option 61, length 7: ether 84:51:81:af:c6:09 MSZ Option 57, length 2: 1500 Vendor-Class Option 60, length 12: "dhcpcd-5.5.6" Hostname Option 12, length 24: "android-c4225d1bbc9aee2f" Parameter-Request Option 55, length 9: Subnet-Mask, Static-Route, Default-Gateway, Domain-Name-Server Domain-Name, BR, Lease-Time, RN RB 23:52:10.642087 68:05:ca:06:81:3d > 84:51:81:af:c6:09, ethertype IPv4 (0x0800), length 42: (tos 0x0, ttl 64, id 63858, offset 0, flags [none], proto UDP (17), length 28) 81.187.50.101.67 > 81.187.50.124.68: [|bootp] 23:52:19.144317 84:51:81:af:c6:09 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 350: (tos 0x0, ttl 64, id 20549, offset 0, flags [none], proto UDP (17), length 336) 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 84:51:81:af:c6:09, length 308, xid 0x6d6253a, secs 17, Flags [none] Client-Ethernet-Address 84:51:81:af:c6:09 Vendor-rfc1048 Extensions Magic Cookie 0x63825363 DHCP-Message Option 53, length 1: Discover Client-ID Option 61, length 7: ether 84:51:81:af:c6:09 MSZ Option 57, length 2: 1500 Vendor-Class Option 60, length 12: "dhcpcd-5.5.6" Hostname Option 12, length 24: "android-c4225d1bbc9aee2f" Parameter-Request Option 55, length 9: Subnet-Mask, Static-Route, Default-Gateway, Domain-Name-Server Domain-Name, BR, Lease-Time, RN RB 23:52:19.144980 68:05:ca:06:81:3d > 84:51:81:af:c6:09, ethertype IPv4 (0x0800), length 42: (tos 0x0, ttl 64, id 63859, offset 0, flags [none], proto UDP (17), length 28) 81.187.50.101.67 > 81.187.50.124.68: [|bootp] =============================================================================== Note - the ACKs don't seem to appear on the wire at all, the 'offers' have essentially zero length (42 byte packets). Any hints? As a last thing, I'm also getting: Waking up in 2.9 seconds. (0) Cleaning up request packet ID -1355165549 with timestamp +12 Waking up in 3.9 seconds. (1) Cleaning up request packet ID -56667974 with timestamp +16 Ready to process requests. I'm sure there shouldn't be negative IDs there...? Cheers, Matthew -- Matthew Newton, Ph.D. <mcn4@le.ac.uk> Systems Specialist, Infrastructure Services, I.T. Services, University of Leicester, Leicester LE1 7RH, United Kingdom For IT help contact helpdesk extn. 2253, <ithelp@le.ac.uk>