I''m having some problems setting up IPv6 on a domU and don''t know what''s going on. It seems SIT tunnel packets are disappearing in the routing between dom0 and domU. dom0 is a Debian Lenny (2.6.26-2-xen-amd64) and one domU is running Gentoo. All the domUs I''m using so far have their own public IP but I''d like to keep the option of adding more so I''m using routed networking, so far w/o any further iptables setup as net.ipv4.ip_forward already made everything work as intended, including an OpenVPN server on this domU. Now I''d like to connect this same domU via IPv6 using Hurricane Electric''s tunnel broker. Everything is set up the way it''s documented on HE''s site and how it worked on another box before. I can see my "he6" PtP device with correct IPv4 local/peer addresses and IPv6 address set up, but when I try to ping the other side I get 100% packet loss. A tcpdump on dom0''s eth0 shows the tunnel packets with ICMPv6 payload going out, and answers coming in just fine---just that the answers never reach the domU, i.e. they''re gone when I tcpdump on the vif interface. Is this a XEN bug (I realize the kernel is oldish...) or am I missing something here? cheers, Matthias _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi Matthias, Am Montag, den 21.12.2009, 15:55 -0600 schrieb Matthias Bethke:> I''m having some problems setting up IPv6 on a domU and don''t know what''s > going on..............> ts with ICMPv6 payload > going out, and answers coming in just fine---just that the answers never > reach the domU, i.e. they''re gone when I tcpdump on the vif interface. > Is this a XEN bug (I realize the kernel is oldish...) or am I missing > something here?echo "1" > /proc/sys/net/ipv6/conf/all/forwarding> > cheers, > Matthiashth, thomas> _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Thomas Halinka on Mon, Dec 21, 2009 at 11:14:22PM +0100:> > going out, and answers coming in just fine---just that the answers never > > reach the domU, i.e. they''re gone when I tcpdump on the vif interface. > > Is this a XEN bug (I realize the kernel is oldish...) or am I missing > > something here? > > echo "1" > /proc/sys/net/ipv6/conf/all/forwardingThanks but no, didn''t work, actually I think that was among the things I''d tried before out of sheer desperation. Based on my admittedly quite noobish understanding of tunnels I wouldn''t expect it to work as to dom0''s routing the tunnel shouldn''t be anything but an opaque stream of IPv4 packets. It should work even with a dom0 kernel that doesn''t even have IPv6 compiled in. cheers, Matthias _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users