Date: Fri, 18 Aug 2006 17:14:05 -0400 From: gnn@freebsd.org To: Julien =?ISO-8859-1?Q?Abeill=E9?= <julienabeille@yahoo.fr> Cc: freebsd-net@freebsd.org Subject: Re: ipv6 in ipv6 tunnel with FreeBSD 4.11 Message-ID: <m24pw9zqzm.wl%gnn@neville-neil.com> In-Reply-To: <20060818152811.54302.qmail@web26608.mail.ukl.yahoo.com>
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At Fri, 18 Aug 2006 15:28:11 +0000 (GMT), Julien Abeillé wrote: > Hi, > > I am using freebsd 4.11 and trying to setup ipv6 in ipv6 tunnels. All my stuff is on HEAD and 6 so I don't know if this applies but I think it should. > I have the following testbed > 4 machines connected in line: > > M1-----------M2--------FreeBSD-------M3 > c::1---c::2 | b::2----b::1 | a::1---a::2 > > I want to create a tunnel between FreeBSD (b::1) and M2 (b::2) > > Here is my configuration on the FreeBSD machine: > em0 : a::1/64 > em1 b::1/64 > > I do the folllowing to setup the tunnel: > > ifconfig gif0 create > ifconfig gif0 tunnel b::1 b::2 > ifconfig gif0 d::1/64 > route add -inet6 -host c::1 -interface gif0 > > I am not sure about what is the gif0 address d::1/64 used for. > Nor am I. What directions are you following? I believe that may be there because the gif tunnel instructions talked about setting up IPv4 tunnels for IPv6. > the problem is: when i ping or send any traffic from a::2 to c::1, > the FreeBSD machine adds an ipv6 header with b::1 as source, b::2 as destination, but with hop count limit=0 > > Is my configuration ok? A few things to note: 1) You need to have ipv6_gateway_enable="YES" set to forward packets. 2) Are you trying to tunnel between two interfaces on the same machine? It's hard to tell from your description. If the FreeBSD box is a router between two tunnels then you need two tunnel endpoints. One pointing at M2 and one pointing at M3. Best, Georgehelp
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