Hi, hope not bothering you. I tried kernel 2.6-test11 and ipv6, configuring a sit1 device, but with 6to4 ipv6 address and private ipv4 address (192.168.2.199). This is because I am behind a masquerading firewall which gives all ipv6 traffic on ipv4 to my box and does correct nat. I can ping www.kame.net using 192.88.99.1 as relay-router and see the correct echo-reply with ethereal, but instead of accepting the correct answer my box replies a Ipv4 destination unreachable/protocoll unreachable. Is this because of combining sit with 6to4 addresses ? - found only on hint to 6to4 in the code of sit.c which is related to xmit. (Everything works fine with 6to4 and no nating firewall). Thanks in advance Peter PS: I did it with sit as the scripts allow configuring an IPv4 address for 6to4 tunneling, but as this address is not only used for generating the 6to4 Ipv6 local address but also for ipv4 source address, nat does not work. - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html