Date: Thu, 12 Sep 2002 10:37:19 -0400 (EDT) From: Trish Lynch <trish@bsdunix.net> To: <net@freebsd.org> Subject: Re: ipv6 tunneling over ipv4 acting weird Message-ID: <20020912103642.A6060-100000@femme.sapphite.org> In-Reply-To: <20020912094213.J6060-100000@femme.sapphite.org>
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Just as a point, a freenet6 autoconfigured tunnel does the same exact thing.... -Trish On Thu, 12 Sep 2002, Trish Lynch wrote: > I may be doing something wrong, but as far as I know, everything looks > right: > > I'm trying to get a tunnel that previously worked working again. > > this is on FreeBSD 5.0-CURRENT > > ifconfig gif0 create > ifconfig gif0 tunnel 68.50.99.190 64.71.128.82 > ifconfig gif0 inet6 2001:470:1F00:FFFF::AD 2001:470:1F00:FFFF::AC prefixlen 128 > route -n add -inet6 default 2001:470:1F00:FFFF::AC > > > femme:~# ifconfig gif0 > gif0: flags=8051 mtu 1280 > tunnel inet 68.50.99.190 --> 64.71.128.82 > inet6 fe80::2d0:b7ff:fe23:3a0f%gif0 prefixlen 64 scopeid 0x5 > inet6 2001:470:1f00:ffff::ad --> 2001:470:1f00:ffff::ac prefixlen 128 > > > All looks correct however when ping6ing the peer, I get no response, so I > did a tcpdump on the gif0 interface: > > 09:35:35.338762 sapphite-pt.tunnel.tserv1.fmt.ipv6.he.net > > sapphite.tunnel.tserv1.fmt.ipv6.he.net: icmp6: echo request > 09:35:36.338752 sapphite-pt.tunnel.tserv1.fmt.ipv6.he.net > > sapphite.tunnel.tserv1.fmt.ipv6.he.net: icmp6: echo request > 09:35:37.338746 sapphite-pt.tunnel.tserv1.fmt.ipv6.he.net > > sapphite.tunnel.tserv1.fmt.ipv6.he.net: icmp6: echo request > 09:35:38.338790 sapphite-pt.tunnel.tserv1.fmt.ipv6.he.net > > sapphite.tunnel.tserv1.fmt.ipv6.he.net: icmp6: echo request > > If I then do a tcpdump on the fxp1 interface (external ipv4 interface).... > > > femme:~# tcpdump -i fxp1 host 64.71.128.82 > tcpdump: listening on fxp1 > 09:36:28.456322 64.71.128.82 > listmistress.org: > sapphite.tunnel.tserv01.fmt.ipv6.he.net > > sapphite-pt.tunnel.tserv1.fmt.ipv6.he.net: icmp6: echo reply > 09:36:29.339881 listmistress.org > 64.71.128.82: > sapphite-pt.tunnel.tserv1.fmt.ipv6.he.net > > sapphite.tunnel.tserv1.fmt.ipv6.he.net: icmp6: echo request > 09:36:29.448975 64.71.128.82 > listmistress.org: > sapphite.tunnel.tserv1.fmt.ipv6.he.net > > sapphite-pt.tunnel.tserv1.fmt.ipv6.he.net: icmp6: echo reply > 09:36:30.339941 listmistress.org > 64.71.128.82: > sapphite-pt.tunnel.tserv1.fmt.ipv6.he.net > > sapphite.tunnel.tserv1.fmt.ipv6.he.net: icmp6: echo request > 09:36:30.446743 64.71.128.82 > listmistress.org: > sapphite.tunnel.tserv1.fmt.ipv6.he.net > > sapphite-pt.tunnel.tserv1.fmt.ipv6.he.net: icmp6: echo reply > 09:36:31.339905 listmistress.org > 64.71.128.82: > sapphite-pt.tunnel.tserv1.fmt.ipv6.he.net > > sapphite.tunnel.tserv1.fmt.ipv6.he.net: icmp6: echo request > > > Why is the reply not being tunneled back? it works on my OpenBSD box, just > not on my FreeBSD one (the one that I route with) > > -Trish > > -- > Trish Lynch trish@bsdunix.net > Ecartis Core Team trish@listmistress.org > Key fingerprint = C44E 8E63 6E3C 18BD 608F E004 9DC7 C2E9 0E24 DFBD > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-net" in the body of the message > -- Trish Lynch trish@bsdunix.net Ecartis Core Team trish@listmistress.org Key fingerprint = C44E 8E63 6E3C 18BD 608F E004 9DC7 C2E9 0E24 DFBD To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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