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ARP connection fails

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Name: Godgory
Date: December 4, 2006 at 14:02:59 Pacific
OS: FreeBSD 5.4
CPU/Ram: P4@2.8GHz/1GB DDR
Comment:

Hi everyone,
It's been a while since I last posted here, it means I learned a lot from this forum. Anyway, here's a real hard situation I have:
I have a FreeBSD 5.4 NAT router (using pf) and about 350 windows PC's behind it. Sometimes, all of a sudden, the router picks an IP up and hangs (probably) it's ARP connection. I can't ping the external address of the router from the inner host, nor anything outside. Inside everything works.
It remains that way for 5-15 minutes or I disable and then enable the windows "Local Area Connection" of the host or I arping that IP from the router.
Any ideas what this might me?

Thanks a lot.
Alex.



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