using log_in_vain shows error message "Connection attempt to 127.0.0.1:113 from 127.0.0.1:4102"

[Julie Russell]

I'm trying to track down the cause of this error message, that starts to
show up when I enable log_in_vain in rc.conf - I'm running FreeBSD 4.9
Stable.  Any direction greatly appreciated.

Feb 12 15:00:00 server1 /kernel: Connection attempt to TCP 127.0.0.1:113
from 127.0.0.1:4102

TIA,
Julie