dhcp v4 server bypassing relay agent ip addr and directly replying to ciaddr

20 Mar 2019

      Dear Team,

I am facing a problem with v4 dhcp where the server is not sending replies to the relay agent ip addr(from which it received discover), but rather sending directly to ciaddr(the client that sent discover to the relay agent).

My use case:
----------------
      I have a dhcp server (running version 4 , git tag 11ce507fdb001c40cf18d8e42118332350b27bff ) behind a dhcp relay (running version 3.0.19, git tag 63885807ec8d741ecf1af60f9a55edb2d4796982 ).

      Discover from my client targeted at the relay is making its way to the dhcp server , but the offer packet from the server is bypassing the relay and directly landing onto the client.

from the pcap it appears that the server (v4) is stripping off the ciaddr and giaddr in the offer packer.

tcpdump on the server:
------------------------

07:38:46.865317 IP 10.43.18.35.67 > 10.43.18.95.67: BOOTP/DHCP, Request from 00:a0:bc:00:00:02, length 300
07:38:46.867240 IP 10.43.18.95.67 > 10.43.18.124.67: BOOTP/DHCP, Reply, length 300
07:38:46.869644 IP 10.43.18.35.67 > 10.43.18.95.67: BOOTP/DHCP, Request from 00:a0:bc:00:00:02, length 300
07:38:46.870689 IP 10.43.18.95.67 > 10.43.18.124.67: BOOTP/DHCP, Reply, length 300

.124(client) -- > .35(relay agent) --> .95(server)
           ^_ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ |

Please find the radiusd -X output below.

# /usr/local/sbin/radiusd -X
Info  : FreeRADIUS Version 4.0.0
Info  : Copyright 1999-2019 The FreeRADIUS server project and contributors
Info  : There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
Info  : PARTICULAR PURPOSE
Info  : You may redistribute copies of FreeRADIUS under the terms of the
Info  : GNU General Public License
Info  : For more information about these matters, see the file named COPYRIGHT
Info  : Starting - reading configuration files ...
Debug : Including dictionary file "/usr/local/etc/raddb/dictionary"
Debug : including configuration file /usr/local/etc/raddb/radiusd.conf
Debug : including configuration file /usr/local/etc/raddb/clients.conf
Debug : Including files in directory "/usr/local/etc/raddb/mods-enabled/"
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/always
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/attr_filter
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/cache_eap
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/chap
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/client
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/detail
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/detail.log
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/digest
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/dhcpv4
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/echo
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/escape
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/exec
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/expiration
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/expr
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/files
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/linelog
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/logintime
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/mschap
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/ntlm_auth
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/pap
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/passwd
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/radius
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/radutmp
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/sradutmp
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/stats
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/unix
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/unpack
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/utf8
Debug : including configuration file /usr/local/etc/raddb/mods-enabled/redis_ippool
Debug : Including files in directory "/usr/local/etc/raddb/policy.d/"
Debug : including configuration file /usr/local/etc/raddb/policy.d/abfab-tr
Debug : including configuration file /usr/local/etc/raddb/policy.d/accounting
Debug : including configuration file /usr/local/etc/raddb/policy.d/canonicalization
Debug : including configuration file /usr/local/etc/raddb/policy.d/control
Debug : including configuration file /usr/local/etc/raddb/policy.d/cui
Debug : including configuration file /usr/local/etc/raddb/policy.d/debug
Debug : including configuration file /usr/local/etc/raddb/policy.d/dhcp
Debug : including configuration file /usr/local/etc/raddb/policy.d/eap
Debug : including configuration file /usr/local/etc/raddb/policy.d/filter
Debug : including configuration file /usr/local/etc/raddb/policy.d/operator-name
Debug : including configuration file /usr/local/etc/raddb/policy.d/time
Debug : including configuration file /usr/local/etc/raddb/policy.d/vendor
Debug : Including files in directory "/usr/local/etc/raddb/sites-enabled/"
Debug : including configuration file /usr/local/etc/raddb/sites-enabled/dhcp
Debug : Loading dictionaries for proto_dhcpv4
Info  : Loaded module "proto_dhcpv4"
Debug : Parsing security rules to bootstrap UID / GID / chroot / etc.
Debug : main {
Debug :   security {
Debug :     allow_core_dumps = no
Debug :     allow_vulnerable_openssl = "no"
Debug :     openssl_fips_mode = no
Debug :   }
Debug :   name = radiusd
Debug :   name = "radiusd"
Debug :   prefix = "/usr/local"
Debug :   local_state_dir = "/usr/local/var"
Debug :   run_dir = "/usr/local/var/run/radiusd"
Debug : }
Debug : Parsing main configuration.
Debug : main {
Debug :   server dhcp {
Debug :     listen {
Debug :       type = DHCP-Discover
Debug : Loading dictionaries for proto_dhcpv4_base
Info  : Loaded module "proto_dhcpv4_base"
Debug :       type = DHCP-Request
Debug :       type = DHCP-Inform
Debug :       type = DHCP-Release
Debug :       type = DHCP-Decline
Debug :       transport = udp
Debug : Loading dictionaries for proto_dhcpv4_udp
Info  : Loaded module "proto_dhcpv4_udp"
Debug :       udp {
Debug :         ipaddr = 10.43.18.95
Debug :         src_ipaddr = 10.43.18.95
Debug :         port = 67
Debug :         broadcast = no
Debug :         networks {
Debug :         }
Debug :         max_packet_size = 4096
Debug :         max_attributes = 0
Debug :       }
Debug :       limit {
Debug :         idle_timeout = 30.000000
Debug :         nak_lifetime = 30.000000
Debug :         max_connections = 1024
Debug :         max_clients = 256
Debug :         max_pending_packets = 256
Debug :         priority {
Debug :           DHCP-Discover = normal
Debug :           DHCP-Request = normal
Debug :           DHCP-Decline = normal
Debug :           DHCP-Release = normal
Debug :           DHCP-Inform = normal
Debug :           DHCP-Lease-Query = low
Debug :           DHCP-Bulk-Lease-Query = low
Debug :         }
Debug :       }
Debug :     }
Debug :   }
Debug :   security {
Debug :   }
Debug :   sbin_dir = "/usr/local/sbin"
Debug :   logdir = "/usr/local/var/log/radius"
Debug :   libdir = "/usr/local/lib"
Debug :   radacctdir = "/usr/local/var/log/radius/radacct"
Debug :   reverse_lookups = no
Debug :   reverse_lookups = no
Debug :   hostname_lookups = yes
Debug :   hostname_lookups = yes
Debug :   max_request_time = 30
Debug :   max_request_time = 30
Debug :   pidfile = "/usr/local/var/run/radiusd/radiusd.pid"
Debug :   debug_level = 0
Debug :   log {
Debug :     colourise = yes
Debug :   }
Debug :   resources {
Debug :   }
Debug :   thread pool {
Debug :     num_networks = 1
Debug :     num_networks = 1
Debug :     num_workers = 4
Debug :     num_workers = 4
Debug :   }
Debug : }
Switching to configured log settings
radiusd: #### Loading Clients ####
  client localhost {
    ipaddr = 127.0.0.1
    require_message_authenticator = no
    secret = <<< secret >>>
    proto = "*"
    limit {
      max_connections = 16
      lifetime = 0
      idle_timeout = 30
    }
  }
  client localhost_ipv6 {
    ipv6addr = ::1
    require_message_authenticator = no
    secret = <<< secret >>>
    limit {
      max_connections = 16
      lifetime = 0
      idle_timeout = 30
    }
  }
  client 10.0.0.0 {
    ipaddr = 10.0.0.0/8
    require_message_authenticator = no
    limit {
      max_connections = 16
      lifetime = 0
      idle_timeout = 30
    }
  }
Debugger not attached
trigger { ... } subsection not found, triggers will be disabled
#### Bootstrapping listeners ####
#### Bootstrapping modules ####
 modules {
Loaded module "rlm_always"
    always reject {
      rcode = "reject"
      simulcount = 0
      mpp = no
    }
    always fail {
      rcode = "fail"
      simulcount = 0
      mpp = no
    }
    always ok {
      rcode = "ok"
      simulcount = 0
      mpp = no
    }
    always handled {
      rcode = "handled"
      simulcount = 0
      mpp = no
    }
    always invalid {
      rcode = "invalid"
      simulcount = 0
      mpp = no
    }
    always userlock {
      rcode = "userlock"
      simulcount = 0
      mpp = no
    }
    always notfound {
      rcode = "notfound"
      simulcount = 0
      mpp = no
    }
    always noop {
      rcode = "noop"
      simulcount = 0
      mpp = no
    }
    always updated {
      rcode = "updated"
      simulcount = 0
      mpp = no
    }
Loading dictionaries for rlm_attr_filter
Loaded module "rlm_attr_filter"
    attr_filter attr_filter.pre-proxy {
      filename = "/usr/local/etc/raddb/mods-config/attr_filter/pre-proxy"
      relaxed = no
    }
    attr_filter attr_filter.post-proxy {
      filename = "/usr/local/etc/raddb/mods-config/attr_filter/post-proxy"
      relaxed = no
    }
    attr_filter attr_filter.access_reject {
      filename = "/usr/local/etc/raddb/mods-config/attr_filter/access_reject"
      relaxed = no
    }
    attr_filter attr_filter.access_challenge {
      filename = "/usr/local/etc/raddb/mods-config/attr_filter/access_challenge"
      relaxed = no
    }
    attr_filter attr_filter.accounting_response {
      filename = "/usr/local/etc/raddb/mods-config/attr_filter/accounting_response"
      relaxed = no
    }
Loading dictionaries for rlm_cache
Loaded module "rlm_cache"
    cache cache_eap {
      driver = "rlm_cache_rbtree"
      ttl = 15
      max_entries = 0
      epoch = 0
      add_stats = no
    }
Loading dictionaries for rlm_chap
Loaded module "rlm_chap"
Loaded module "rlm_client"
Loading dictionaries for rlm_detail
Loaded module "rlm_detail"
    detail {
      filename = "/usr/local/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/detail-%Y-%m-%d"
      header = "%t"
      permissions = 384
      locking = no
      escape_filenames = no
      log_packet_header = no
    }
    detail auth_log {
      filename = "/usr/local/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/auth-detail-%Y-%m-%d"
      header = "%t"
      permissions = 384
      locking = no
      escape_filenames = no
      log_packet_header = no
    }
    detail reply_log {
      filename = "/usr/local/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/reply-detail-%Y-%m-%d"
      header = "%t"
      permissions = 384
      locking = no
      escape_filenames = no
      log_packet_header = no
    }
    detail pre_proxy_log {
      filename = "/usr/local/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/pre-proxy-detail-%Y-%m-%d"
      header = "%t"
      permissions = 384
      locking = no
      escape_filenames = no
      log_packet_header = no
    }
    detail post_proxy_log {
      filename = "/usr/local/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/post-proxy-detail-%Y-%m-%d"
      header = "%t"
      permissions = 384
      locking = no
      escape_filenames = no
      log_packet_header = no
    }
Loading dictionaries for rlm_digest
Loaded module "rlm_digest"
Loading dictionaries for rlm_dhcpv4
Loaded module "rlm_dhcpv4"
Loaded module "rlm_exec"
    exec echo {
      wait = yes
      program = "/bin/echo %{User-Name}"
      input_pairs = "request"
      output_pairs = "reply"
      shell_escape = yes
    }
Loaded module "rlm_escape"
    escape {
      safe_characters = "@abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.-_: /äéöüàâæçèéêëîïôœùûüaÿÄÉÖÜßÀÂÆÇÈÉÊËÎÏÔŒÙÛÜŸ"
    }
    exec {
      wait = yes
      input_pairs = "request"
      shell_escape = yes
      timeout = 10
    }
Loading dictionaries for rlm_expiration
Loaded module "rlm_expiration"
Loaded module "rlm_expr"
Loading dictionaries for rlm_files
Loaded module "rlm_files"
    files {
      filename = "/usr/local/etc/raddb/mods-config/files/authorize"
      acctusersfile = "/usr/local/etc/raddb/mods-config/files/accounting"
      preproxy_usersfile = "/usr/local/etc/raddb/mods-config/files/pre-proxy"
    }
Loaded module "rlm_linelog"
    linelog {
      destination = "file"
      delimiter = " "
      file {
        filename = "/usr/local/var/log/radius/linelog"
        permissions = 384
        escape_filenames = no
      }
      syslog {
        severity = "info"
      }
      unix {
      }
      tcp {
        server = localhost IPv4 address [127.0.0.1]
        port = 514
        timeout = 2.000000
      }
      udp {
        server = localhost IPv4 address [127.0.0.1]
        port = 514
        timeout = 2.000000
      }
    }
    linelog log_accounting {
      destination = "file"
      delimiter = " "
      file {
        filename = "/usr/local/var/log/radius/linelog-accounting"
        permissions = 384
        escape_filenames = no
      }
      syslog {
        severity = "info"
      }
      unix {
      }
      tcp {
        timeout = 1000.000000
      }
      udp {
        timeout = 1000.000000
      }
    }
Loading dictionaries for rlm_logintime
Loaded module "rlm_logintime"
    logintime {
      minimum_timeout = 60
    }
Loading dictionaries for rlm_mschap
Loaded module "rlm_mschap"
    mschap {
      use_mppe = yes
      require_encryption = no
      require_strong = no
      with_ntdomain_hack = yes
      passchange {
      }
      allow_retry = yes
      winbind {
      }
    }
    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
    }
Loading dictionaries for rlm_pap
Loaded module "rlm_pap"
    pap {
      normalise = yes
    }
Loading dictionaries for rlm_passwd
Loaded module "rlm_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
    }
Loading dictionaries for rlm_radius
Loaded module "rlm_radius"
    radius {
      transport = udp
Loading dictionaries for rlm_radius_udp
Loaded module "rlm_radius_udp"
      udp {
        ipaddr = 127.0.0.1
        port = 1812
        secret = "testing123"
        max_packet_size = 4096
      }
      type = Access-Request
      type = Accounting-Request
      status_checks {
        type = Status-Server
      }
      max_connections = 32
      max_attributes = 255
      connection {
        connect_timeout = 5.000000
        reconnect_delay = 5.000000
        idle_timeout = 5.000000
        zombie_period = 10.000000
      }
      Access-Request {
        initial_retransmission_time = 2
        maximum_retransmission_time = 16
        maximum_retransmission_count = 2
        maximum_retransmission_duration = 30
      }
      Accounting-Request {
        initial_retransmission_time = 2
        maximum_retransmission_time = 16
        maximum_retransmission_count = 5
        maximum_retransmission_duration = 30
      }
      Status-Server {
        initial_retransmission_time = 2
        maximum_retransmission_time = 16
        maximum_retransmission_count = 5
        maximum_retransmission_duration = 30
      }
    }
Loading dictionaries for rlm_radutmp
Loaded module "rlm_radutmp"
    radutmp {
      filename = "/usr/local/var/log/radius/radutmp"
      username = "%{User-Name}"
      case_sensitive = yes
      check_with_nas = yes
      permissions = 384
      caller_id = no
    }
    radutmp sradutmp {
      filename = "/usr/local/var/log/radius/sradutmp"
      username = "%{User-Name}"
      case_sensitive = yes
      check_with_nas = yes
      permissions = 420
      caller_id = no
    }
Loading dictionaries for rlm_stats
Loaded module "rlm_stats"
    stats {
    }
Loading dictionaries for rlm_unix
Loaded module "rlm_unix"
    unix {
    }
Creating attribute Unix-Group
Loading dictionaries for rlm_unpack
Loaded module "rlm_unpack"
Loaded module "rlm_utf8"
libfreeradius-redis: libhiredis version: 0.12.1
Loading dictionaries for rlm_redis_ippool
Loaded module "rlm_redis_ippool"
    redis_ippool {
      copy_on_update = yes
      redis {
        server = "10.43.16.162"
        port = 6379
        database = 0
        max_nodes = 20
        max_alt = 3
        max_redirects = 2
      }
    }
  instantiate {
  }
 } # modules
#### Instantiating listeners ####
Compiling policies in server dhcp { ... }
compiling - recv DHCP-Discover {...}
compiling - recv DHCP-Request {...}
compiling - recv DHCP-Decline {...}
compiling - recv DHCP-Inform {...}
compiling - recv DHCP-Release {...}
compiling - recv DHCP-Lease-Query {...}
#### Instantiating modules ####
Instantiating module "attr_filter.access_challenge"
Reading file /usr/local/etc/raddb/mods-config/attr_filter/access_challenge
Instantiating module "attr_filter.access_reject"
Reading file /usr/local/etc/raddb/mods-config/attr_filter/access_reject
Instantiating module "attr_filter.accounting_response"
Reading file /usr/local/etc/raddb/mods-config/attr_filter/accounting_response
Instantiating module "attr_filter.post-proxy"
Reading file /usr/local/etc/raddb/mods-config/attr_filter/post-proxy
Instantiating module "attr_filter.pre-proxy"
Reading file /usr/local/etc/raddb/mods-config/attr_filter/pre-proxy
Instantiating module "auth_log"
rlm_detail (auth_log) - 'User-Password' suppressed, will not appear in detail output
Instantiating module "cache_eap"
Loaded module "rlm_cache_rbtree"
Instantiating module "detail"
Instantiating module "etc_passwd"
Instantiating module "expiration"
Instantiating module "fail"
Instantiating module "files"
Reading file /usr/local/etc/raddb/mods-config/files/authorize
Reading file /usr/local/etc/raddb/mods-config/files/accounting
Reading file /usr/local/etc/raddb/mods-config/files/pre-proxy
Instantiating module "handled"
Instantiating module "invalid"
Instantiating module "linelog"
Instantiating module "log_accounting"
Instantiating module "logintime"
Instantiating module "mschap"
mschap: using internal authentication
Instantiating module "noop"
Instantiating module "notfound"
Instantiating module "ok"
Instantiating module "post_proxy_log"
Instantiating module "pre_proxy_log"
Instantiating module "radius"
Instantiating module "redis_ippool"
rlm_redis (redis) [1] - Initialising connection pool
        pool {
          start = 0
          min = 4
          max = 4
          max_pending = 0
          spare = 1
          uses = 0
          lifetime = 0
          cleanup_interval = 30
          idle_timeout = 60
          connect_timeout = 3.000000
          held_trigger_min = 0.000000
          held_trigger_max = 0.500000
          retry_delay = 30
          spread = no
        }
rlm_redis (redis) [1] - Ignoring "spare = 1", forcing to "spare = 0"
rlm_redis (redis) [1] - 0 of 0 connections in use.  You  may need to increase "spare"
rlm_redis (redis) [1] - Opening additional connection (0), 1 of 4 pending slots used
rlm_redis (redis) - [1] Connecting to node 10.43.16.162:6379
rlm_redis (redis) [1] - Reserved connection (0)
rlm_redis (redis) [1] - Released connection (0)
rlm_redis (redis) [1] - Need 3 more connections to reach min connections (4)
rlm_redis (redis) [1] - Opening additional connection (1), 1 of 3 pending slots used
rlm_redis (redis) - [1] Connecting to node 10.43.16.162:6379
Instantiating module "reject"
Instantiating module "reply_log"
Instantiating module "stats"
Instantiating module "updated"
Instantiating module "userlock"
[1] radius - Connection initialising
[1] radius - Connection initialised
Scheduler created in single-threaded mode
#### Opening listener interfaces ####
Listening on dhcpv4 address proto_dhcpv4_udp server 10.43.18.95 port 67 bound to virtual server dhcp
Waking up in 4.9 seconds.
radius - Connection open - proto udp local 0.0.0.0 port 56038 remote 127.0.0.1 port 1812
radius - Allocated Status-Server ID 0 for status checks on connection proto udp local 0.0.0.0 port 56038 remote 127.0.0.1 port 1812
radius - Setting idle timeout to +5.000000 for connection proto udp local 0.0.0.0 port 56038 remote 127.0.0.1 port 1812
[1] radius - Connection established
Waking up in 4.9 seconds.
Waking up in 4.9 seconds.

radius - Idle timeout for connection proto udp local 0.0.0.0 port 56038 remote 127.0.0.1 port 1812
[1] radius - Closing connection (13)
radius - Connection closed - proto udp local 0.0.0.0 port 56038 remote 127.0.0.1 port 1812
Ready to process requests
proto_dhcpv4_udp - Received DHCP-Discover XID 00000000 length 300 proto_dhcpv4_udp server 10.43.18.95 port 67
Resetting worker 30 cleanup timer to +0s
(0)  running request
(0)  Received DHCP-Discover XID 00000000 from 10.43.18.35:67 to 10.43.18.95:67 via eth1 
(0)    &DHCP-Opcode = Client-Message
(0)    &DHCP-Hardware-Type = Ethernet
(0)    &DHCP-Hardware-Address-Length = 6
(0)    &DHCP-Hop-Count = 2
(0)    &DHCP-Transaction-Id = 0
(0)    &DHCP-Number-of-Seconds = 0
(0)    &DHCP-Flags = 0
(0)    &DHCP-Client-IP-Address = 10.43.18.124
(0)    &DHCP-Your-IP-Address = 0.0.0.0
(0)    &DHCP-Server-IP-Address = 0.0.0.0
(0)    &DHCP-Gateway-IP-Address = 10.43.18.35
(0)    &DHCP-Client-Hardware-Address = 00:a0:bc:00:00:02
(0)    &DHCP-Message-Type = DHCP-Discover
(0)    &DHCP-DHCP-Server-Identifier = 10.43.18.92
(0)    &DHCP-Client-Identifier = 0x0100a1bc000001
(0)  Running 'recv DHCP-Discover' from file /usr/local/etc/raddb/sites-enabled/dhcp
(0)  recv DHCP-Discover {
(0)    update reply {
(0)      &DHCP-Message-Type = DHCP-Offer
(0)    } # update reply (noop)
(0)    update reply {
(0)      &DHCP-Domain-Name-Server = 127.0.0.1
(0)      &DHCP-Domain-Name-Server = 127.0.0.2
(0)      &DHCP-Subnet-Mask = 255.255.255.0
(0)      &DHCP-Router-Address = 192.0.2.1
(0)      &DHCP-IP-Address-Lease-Time = 900
(0)      &DHCP-DHCP-Server-Identifier = 192.0.2.1
(0)    } # update reply (noop)
(0)    update control {
(0)      &Pool-Name := "local"
(0)    } # update control (noop)
(0)    redis_ippool - Allocating lease from pool "local", to "00:a0:bc:00:00:02", expires in 120s
(0)    redis_ippool - Reserved connection (1)
(0)    redis_ippool - [1] >>> Sending command(s) to 10.43.16.162:6379
(0)    redis_ippool - [1] <<< Returned: success
(0)    redis_ippool - Released connection (1)
(0)    redis_ippool - Need 2 more connections to reach min connections (4)
(0)    redis_ippool - Opening additional connection (2), 1 of 2 pending slots used
rlm_redis (redis) - [1] Connecting to node 10.43.16.162:6379
(0)    redis_ippool - &reply:DHCP-Your-IP-Address := 192.172.156.164
(0)    redis_ippool - &reply:DHCP-IP-Address-Lease-Time := 120
(0)    redis_ippool - IP address lease allocated
(0)    redis_ippool (updated)
(0)    ok (ok)
(0)  } # recv DHCP-Discover (updated)
(0)  Sent DHCP-Offer XID 00000000 from 10.43.18.95:67 to 10.43.18.35:67 via eth1 
(0)    &DHCP-Message-Type = DHCP-Offer
(0)    &DHCP-Domain-Name-Server = 127.0.0.1
(0)    &DHCP-Subnet-Mask = 255.255.255.0
(0)    &DHCP-Router-Address = 192.0.2.1
(0)    &DHCP-IP-Address-Lease-Time := 120
(0)    &DHCP-DHCP-Server-Identifier = 192.0.2.1
(0)  done request
(0)  finished request.
Ready to process requests
Reply will be unicast to CIADDR from original packet.
proto_dhcpv4_udp - cleaning up ID 1
Ready to process requests
proto_dhcpv4_udp - Received DHCP-Request XID 00000000 length 300 proto_dhcpv4_udp server 10.43.18.95 port 67
Resetting worker 30 cleanup timer to +0s
(1)  running request
(1)  Received DHCP-Request XID 00000000 from 10.43.18.35:67 to 10.43.18.95:67 via eth1 
(1)    &DHCP-Opcode = Client-Message
(1)    &DHCP-Hardware-Type = Ethernet
(1)    &DHCP-Hardware-Address-Length = 6
(1)    &DHCP-Hop-Count = 2
(1)    &DHCP-Transaction-Id = 0
(1)    &DHCP-Number-of-Seconds = 0
(1)    &DHCP-Flags = 0
(1)    &DHCP-Client-IP-Address = 10.43.18.124
(1)    &DHCP-Your-IP-Address = 0.0.0.0
(1)    &DHCP-Server-IP-Address = 0.0.0.0
(1)    &DHCP-Gateway-IP-Address = 10.43.18.35
(1)    &DHCP-Client-Hardware-Address = 00:a0:bc:00:00:02
(1)    &DHCP-Message-Type = DHCP-Request
(1)    &DHCP-Requested-IP-Address = 192.172.156.164
(1)    &DHCP-DHCP-Server-Identifier = 10.43.18.92
(1)    &DHCP-Client-Identifier = 0x0100a1bc000001
(1)  Running 'recv DHCP-Request' from file /usr/local/etc/raddb/sites-enabled/dhcp
(1)  recv DHCP-Request {
(1)    update reply {
(1)      &DHCP-Message-Type = DHCP-Ack
(1)    } # update reply (noop)
(1)    update reply {
(1)      &DHCP-Domain-Name-Server = 127.0.0.1
(1)      &DHCP-Domain-Name-Server = 127.0.0.2
(1)      &DHCP-Subnet-Mask = 255.255.255.0
(1)      &DHCP-Router-Address = 192.0.2.1
(1)      &DHCP-IP-Address-Lease-Time = 900
(1)      &DHCP-DHCP-Server-Identifier = 192.0.2.1
(1)    } # update reply (noop)
(1)    update control {
(1)      &Pool-Name := "local"
(1)    } # update control (noop)
(1)    redis_ippool - Allocating lease from pool "local", to "00:a0:bc:00:00:02", expires in 120s
(1)    redis_ippool - Reserved connection (2)
(1)    redis_ippool - [1] >>> Sending command(s) to 10.43.16.162:6379
(1)    redis_ippool - [1] <<< Returned: success
(1)    redis_ippool - Released connection (2)
(1)    redis_ippool - &reply:DHCP-Your-IP-Address := 192.172.156.164
(1)    redis_ippool - &reply:DHCP-IP-Address-Lease-Time := 120
(1)    redis_ippool - IP address lease allocated
(1)    redis_ippool (updated)
(1)    ok (ok)
(1)  } # recv DHCP-Request (updated)
(1)  Sent DHCP-Ack XID 00000000 from 10.43.18.95:67 to 10.43.18.35:67 via eth1 
(1)    &DHCP-Message-Type = DHCP-Ack
(1)    &DHCP-Domain-Name-Server = 127.0.0.1
(1)    &DHCP-Subnet-Mask = 255.255.255.0
(1)    &DHCP-Router-Address = 192.0.2.1
(1)    &DHCP-IP-Address-Lease-Time := 120
(1)    &DHCP-DHCP-Server-Identifier = 192.0.2.1
(1)  done request
(1)  finished request.
Ready to process requests
Reply will be unicast to CIADDR from original packet.
proto_dhcpv4_udp - cleaning up ID 1
Ready to process requests

Sorry for the lengthy mail.
Please advise.

Thanks and regards,
Vikram.

Katuri, Vikram

Matthew Newton

Adam Bishop

Alan DeKok

tags

participants (4)