radius -X  doesn´t show any error or warning until the end (Segmentation fault). You can see the result of my last execution:

Starting - reading configuration files ...
reread_config:  reading radiusd.conf
Config:   including file: /usr/local/etc/raddb/proxy.conf
Config:   including file: /usr/local/etc/raddb/clients.conf
Config:   including file: /usr/local/etc/raddb/snmp.conf
Config:   including file: /usr/local/etc/raddb/eap.conf
Config:   including file: /usr/local/etc/raddb/sql.conf
 main: prefix = "/usr/local"
 main: localstatedir = "/usr/local/var"
 main: logdir = "/usr/local/var/log/radius"
 main: libdir = "/usr/local/lib"
 main: radacctdir = "/usr/local/var/log/radius/radacct"
 main: hostname_lookups = no
 main: max_request_time = 30
 main: cleanup_delay = 5
 main: max_requests = 1024
 main: delete_blocked_requests = 0
 main: port = 1645
 main: allow_core_dumps = no
 main: log_stripped_names = no
 main: log_file = "/usr/local/var/log/radius/radius.log"
 main: log_auth = no
 main: log_auth_badpass = no
 main: log_auth_goodpass = no
 main: pidfile = "/usr/local/var/run/radiusd/radiusd.pid"
 main: user = "(null)"
 main: group = "(null)"
 main: usercollide = no
 main: lower_user = "no"
 main: lower_pass = "no"
 main: nospace_user = "no"
 main: nospace_pass = "no"
 main: checkrad = "/usr/local/sbin/checkrad"
 main: proxy_requests = yes
 proxy: retry_delay = 5
 proxy: retry_count = 3
 proxy: synchronous = no
 proxy: default_fallback = yes
 proxy: dead_time = 120
 proxy: post_proxy_authorize = yes
 proxy: wake_all_if_all_dead = no
 security: max_attributes = 200
 security: reject_delay = 1
 security: status_server = no
 main: debug_level = 0
read_config_files:  reading dictionary
read_config_files:  reading naslist
Using deprecated naslist file.  Support for this will go away soon.
read_config_files:  reading clients
read_config_files:  reading realms
radiusd:  entering modules setup
Module: Library search path is /usr/local/lib
Module: Loaded exec
 exec: wait = yes
 exec: program = "(null)"
 exec: input_pairs = "request"
 exec: output_pairs = "(null)"
 exec: packet_type = "(null)"
rlm_exec: Wait=yes but no output defined. Did you mean output=none?
Module: Instantiated exec (exec)
Module: Loaded expr
Module: Instantiated expr (expr)
Module: Loaded PAP
 pap: encryption_scheme = "crypt"
Module: Instantiated pap (pap)
Module: Loaded CHAP
Module: Instantiated chap (chap)
Module: Loaded MS-CHAP
 mschap: use_mppe = yes
 mschap: require_encryption = no
 mschap: require_strong = no
 mschap: with_ntdomain_hack = no
 mschap: passwd = "(null)"
 mschap: authtype = "MS-CHAP"
 mschap: ntlm_auth = "(null)"
Module: Instantiated mschap (mschap)
Module: Loaded System
 unix: cache = no
 unix: passwd = "(null)"
 unix: shadow = "(null)"
 unix: group = "(null)"
 unix: radwtmp = "/usr/local/var/log/radius/radwtmp"
 unix: usegroup = no
 unix: cache_reload = 600
Module: Instantiated unix (unix)
Module: Loaded eap
 eap: default_eap_type = "md5"
 eap: timer_expire = 60
 eap: ignore_unknown_eap_types = no
 eap: cisco_accounting_username_bug = no
rlm_eap: Loaded and initialized type md5
rlm_eap: Loaded and initialized type leap
 gtc: challenge = "Password: "
 gtc: auth_type = "PAP"
rlm_eap: Loaded and initialized type gtc
 mschapv2: with_ntdomain_hack = no
rlm_eap: Loaded and initialized type mschapv2
Module: Instantiated eap (eap)
Module: Loaded preprocess
 preprocess: huntgroups = "/usr/local/etc/raddb/huntgroups"
 preprocess: hints = "/usr/local/etc/raddb/hints"
 preprocess: with_ascend_hack = no
 preprocess: ascend_channels_per_line = 23
 preprocess: with_ntdomain_hack = no
 preprocess: with_specialix_jetstream_hack = no
 preprocess: with_cisco_vsa_hack = no
Module: Instantiated preprocess (preprocess)
Module: Loaded realm
 realm: format = "suffix"
 realm: delimiter = "@"
 realm: ignore_default = no
 realm: ignore_null = no
Module: Instantiated realm (suffix)
Module: Loaded files
 files: usersfile = "/usr/local/etc/raddb/users"
 files: acctusersfile = "/usr/local/etc/raddb/acct_users"
 files: preproxy_usersfile = "/usr/local/etc/raddb/preproxy_users"
 files: compat = "no"
Module: Instantiated files (files)
Module: Loaded Acct-Unique-Session-Id
 acct_unique: key = "User-Name, Acct-Session-Id, NAS-IP-Address, Client-IP-Address, NAS-Port"
Module: Instantiated acct_unique (acct_unique)
Module: Loaded detail
 detail: detailfile = "/usr/local/var/log/radius/radacct/%{Client-IP-Address}/detail-%Y%m%d"
 detail: detailperm = 384
 detail: dirperm = 493
 detail: locking = no
Module: Instantiated detail (detail)
Module: Loaded radutmp
 radutmp: filename = "/usr/local/var/log/radius/radutmp"
 radutmp: username = "%{User-Name}"
 radutmp: case_sensitive = yes
 radutmp: check_with_nas = yes
 radutmp: perm = 384
 radutmp: callerid = yes
Module: Instantiated radutmp (radutmp)
Segmentation fault

And the config for the post-auth and accounting:

#
#  Accounting.  Log the accounting data.
#
accounting {
        #
        #  Create a 'detail'ed log of the packets.
        #  Note that accounting requests which are proxied
        #  are also logged in the detail file.
        detail
#       daily

        #  Update the wtmp file
        #
        #  If you don't use "radlast", you can delete this line.
        unix

        #
        #  For Simultaneous-Use tracking.
        #
        #  Due to packet losses in the network, the data here
        #  may be incorrect.  There is little we can do about it.
        radutmp
#       sradutmp

        #  Return an address to the IP Pool when we see a stop record.
#       main_pool
######### My two ippools
        1
        2
        #
        #  Log traffic to an SQL database.
        #
        #  See "Accounting queries" in sql.conf
#       sql


        #  Cisco VoIP specific bulk accounting
#       pgsql-voip

}


#  Post-Authentication
#  Once we KNOW that the user has been authenticated, there are
#  additional steps we can take.
post-auth {
        #  Get an address from the IP Pool.
#       main_pool
###### My two ippools
        1
        2
        #
        #  If you want to have a log of authentication replies,
        #  un-comment the following line, and the 'detail reply_log'
        #  section, above.
#       reply_log

        #
        #  After authenticating the user, do another SQL qeury.
        #
        #  See "Authentication Logging Queries" in sql.conf
#       sql

        #
        #  Un-comment the following if you have set
        #  'edir_account_policy_check = yes' in the ldap module sub-section of
        #  the 'modules' section.
        #
#       ldap
        #
        #  Access-Reject packets are sent through the REJECT sub-section of the
        #  post-auth section.
        #  Uncomment the following and set the module name to the ldap instance
        #  name if you have set 'edir_account_policy_check = yes' in the ldap
        #  module sub-section of the 'modules' section.
        #
#       Post-Auth-Type REJECT {
#               insert-module-name-here
#       }

}



freeradius-users-bounces@lists.freeradius.org escribió el 15/07/2005 10:44:20:

> What does radiusd –X tells you?
> Can you post more info from your accounting and post-auth section?
>  
>
> From: freeradius-users-bounces@lists.freeradius.org [mailto:
> freeradius-users-bounces@lists.freeradius.org] On Behalf Of
> abernabe@mutua-mad.es
> Sent: Friday, July 15, 2005 7:42 AM
> To: freeradius-users@lists.freeradius.org
> Subject: ippool problem
>  
>
> Hello,
>
> I´m trying to configure a FreeRadius 1.0.4 in Red Hat 8.0.
> Everything works OK until I add the ippool in the "post-auth" and
> "accounting" section.
>
> When I start the server I get always the error "Segmentation Fault"
> after loading radutmp, just when it tries to load the ippool in the
> "accounting" section
>
> I have the following configuration in the ippool module:
>
>         ippool 2 {
>                 range-start = 172.20.1.1
>                 range-stop = 172.20.1.254
>                 netmask = 255.255.255.0
>                 cache-size = 254
>                 session-db = ${raddbdir}/db.ippool
>                 ip-index = ${raddbdir}/db.ipindex
>                 override = yes
>                 maximum-timeout = 0
>         }
>
> Do you know if I´m doing something wrong?
>
> Thanks -
> List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html