Hello everyone.

I experience some strange network behaviour. My setup is as following:
* ALIX 2c3 hardware, connected to an adsl modem on vr2, pppoe/nat/pf
* internal lan, 10.1.0.0/16 (dhcp on the alix) via switch connected to  
vr0 of the alix

This all works perfectly great, with one exception: sometimes (I can't  
figure out any regularity, about one to five times a month) I loose my  
LAN network connection. The adsl connection still works, I can ping  
the world. But my internal LAN connection is dead. My Notebook doesn't  
get an IP adress, a dump with tcpdump shows nothing but the traffic  
generated by my notebook (mostly arp). The same on the ALIX, nothing  
but its own traffic. I can solve this by doing a:
* ifconfig vr0 down
* ifconfig vr0 up
and everthing works fine again.

Does anybody have a hint on whats going on here? What should I look for?

Thank you all, regards,
Manuel