### Relevant pg_hba.conf info:

local   sameuser        all                                   md5
host    sameuser        all           127.0.0.1/32            md5
host    sameuser        all           192.168.5.0/24        md5

local   somedatabase            foob                                  md5
host    somedatabase            foob          127.0.0.1/32            md5
host    somedatabase            foob          192.168.5.0/24        md5

### Log info, verbosity level = debug5 and verbose for everything

2007-02-01 15:28:12 [2442] LOG:  00000: connection received: host=[local] port=
LOCATION:  BackendFork, postmaster.c:2395
2007-02-01 15:28:12 [2442] FATAL:  28000: IDENT authentication failed for user "foob"
LOCATION:  auth_failed, auth.c:395
2007-02-01 15:28:12 [2442] DEBUG:  00000: proc_exit(0)
LOCATION:  proc_exit, ipc.c:95
2007-02-01 15:28:12 [2442] DEBUG:  00000: shmem_exit(0)
LOCATION:  shmem_exit, ipc.c:126
2007-02-01 15:28:12 [2442] DEBUG:  00000: exit(0)
LOCATION:  proc_exit, ipc.c:113
2007-02-01 15:28:12 [2430] DEBUG:  00000: forked new backend, pid=2442 socket=8
LOCATION:  BackendStartup, postmaster.c:2235
2007-02-01 15:28:12 [2430] DEBUG:  00000: reaping dead processes
LOCATION:  reaper, postmaster.c:1819
2007-02-01 15:28:12 [2430] DEBUG:  00000: child process (PID 2442) exited with exit code 0
LOCATION:  LogChildExit, postmaster.c:2078