Date: Sat, 14 Feb 1998 21:12:28 -0800 From: Phil Staub <phils@casa.staub.net> To: stable@FreeBSD.ORG Subject: ppp -alias failure Message-ID: <199802150512.VAA06781@casa.staub.net>
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Does anybody know of a problem where ppp fails to properly alias outgoing packets? I've got three machines sitting on net 192.168.10 via ethernet behind a dual-homed host gateway machine (also on 192.168.10) which is connected to my ISP via ppp -alias. On the gateway machine, I monitor the traffic on the tun0 link with "tcpdump -e -l -i tun0". Things are usually OK: I access the internet from one of the machines on the private net, and I see packets to and from the gateway machine on tcpdump. However, under some circumstances that I haven't quite pinned down yet, I start seeing some of my 192.168.10 addresses showing up on the tun0 interface, in both source and destination varieties. This sounds like a Bad Thing to me. So far the three things that seem to precipitate this behavior are smtp, nntp and http packets. Not all of them, though. What's puzzling is that when this happens, I apparently start getting timeouts, then packets sometimes routed to the correct (gateway) ip address, and sometimes to the ones behind the gateway. If it's of any importance, I *have* made some recent nameserver changes, but I'm not sure how that could be involved. Can anyone tell me what's going on here and what to do about it? Thanks, Phil To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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