R: R: Slow PF

["David Galligani" <davidgalligani@es.luxottica.com>]

Hi all ,
The lan connection of the router was originally in half duplex mode , I' ve
tried putting it in full duplex ...
The ethernet to the router is in auto detect mode .
Actually I 've no rules in my pf.conf !!! I've deleted everything to see if
this was the problem ...
I'll build them up when something works ...
my nat.conf is
nat on xl1 from 192.168.0.0/16 to any -> 192.168.1.1
Anybody can understand why if I change the xl1 netmask ( and the router
one ) to 255.255.0.0 It doesn't work at all ?
It works only with a 255.255.255.0 netmask (??)
I've tried with a 255.255.255.192 , but It doesn't work ...
tcpdump showed me that the box get stuck in dns requests ...
My nameserver is the 192.168.0.1 , a Slackware  box , that works perfectly
when the router is connected directly to the switch ...

Can be a slow machine problem ? It's a Pentium120 with 48 mb ram fast enough
?
I'm beginning to think that can be a router problem ... It's a Telefonica
one , a Speedstream 5600 , and usually Telefonica's
hardware sucks...
Any idea ?

Thank you all , guys

Ciao

David