Date: Sat, 18 Oct 2003 20:05:49 +0200 From: Nicolas DEFFAYET <nicolas.deffayet@ndsoftware.net> To: freebsd-net@freebsd.org Subject: TCP IPv4 connections problem Message-ID: <1066500348.10046.197.camel@w1-2-aub.fr.corp.ndsoftware.com>
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Hello, I have a very strange problem on a router (R1): it stop to reply to TCP IPv4 connections on one of its network interfaces after a random time but it don't stop to reply to TCP IPv6 connections and ICMP IPv4/IPv6. The network is composed of 3 routers with the same hardware and software (FreeBSD 5.0): R1, R2 and R3. Interfaces on R1: ti0: to R2 ti1: to R3 ti2: to LAN1 Interfaces on R2: ti0: to R1 ti1: to LAN2 Interfaces on R3: ti0: to R1 ti1: to LAN3 Each interface have both IPv4 and IPv6 address. R3 <-> R1 <-> R2 When the problem occur (between 3 and 24 hours after reboot): LAN3 <-> R3: ICMP IPv4/IPv6 and TCP IPv4/IPv6 is OK LAN3 <-> R1: ICMP IPv4/IPv6 and TCP IPv6 is OK, TCP IPv4 is not OK LAN3 <-> R2: ICMP IPv4/IPv6 and TCP IPv4/IPv6 is OK R3 <-> R1: ICMP IPv4/IPv6 and TCP IPv6 is OK, TCP IPv4 is not OK R3 <-> R2: ICMP IPv4/IPv6 and TCP IPv4/IPv6 is OK LAN1 <-> R1: ICMP IPv4/IPv6 and TCP IPv4/IPv6 is OK LAN2 <-> R1: ICMP IPv4/IPv6 and TCP IPv4/IPv6 is OK LAN2 <-> R2: ICMP IPv4/IPv6 and TCP IPv4/IPv6 is OK R1 <-> R2: ICMP IPv4/IPv6 and TCP IPv4/IPv6 is OK When i try to establish a TCP IPv4 connection directly to R1 through the ti1 interface of R1 it dont work, but when i try to establish a TCP IPv4 connection directly to R1 through the ti0 or ti2 interface of R1 it work. I can establish from R3 a TCP IPv4 connection directly to R2 through R1. Do you have an idea how fix the problem ? Thanks Best Regards, -- Nicolas DEFFAYET, NDSoftware NDSoftware IP Network: http://www.ip.ndsoftware.net/ FNIX6 (French National Internet Exchange IPv6): http://www.fnix6.net/ EuroNOG: http://www.euronog.org/
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