Problem with port 0

Mon Jan 15 15:35:52 UTC 2007

Hug Me wrote:

> 11:08:06.528691 IP (tos 0x4, ttl 255, id 0, offset 0, flags [DF], length:
> 51) 10.0.0.2.0 > 10.0.0.1.69: [udp sum ok]  23 RRQ "load2000v115.d" octet

> We believe FreeBSD is not allowing a UDP source port of 0 and the kernel is
> dropping the packet before it ever reaches the tftp server but are
> unable to
> verify this hypothesis.

A shot in the dark: any firewalls or similar services active on the
FreeBSD box?