This isn't Debian related but I'd appreciate any insight as to why this isn't working.
I've based my scripts on the 6to4 setup page, <URL: http://people.debian.org/~csmall//ipv6/setup624.html> such that it brings up the connection via sit0 automatically. Graphically: +---------+ +---------+ +------+ | caliban |----| giskard |======| msft | +---------+ +---------+ +------+ --- is connection via IPv4/IPv6 on ethernet === is a tunneled IPv6 connection via IPv4 over PPP IPv6 works properly from giskard to the rest of the world IPv6 works properly from caliban to giskard IPv6 does NOT work from caliban to the rest of the world After the link has been established the address and routes look like: BEFORE giskard:~# ip -6 addr 1: lo: <LOOPBACK,UP> mtu 3924 qdisc noqueue inet6 ::1/128 scope host 2: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100 inet6 fe80::200:c0ff:fe2b:afb3/10 scope link 3: [EMAIL PROTECTED]: <NOARP,UP> mtu 1480 qdisc noqueue inet6 ::203.134.154.43/96 scope global inet6 2002:cb86:9a2b::1/128 scope global inet6 ::127.0.0.1/96 scope host inet6 ::203.7.227.1/96 scope global giskard:~# ip -6 route ::/96 via :: dev sit0 metric 256 mtu 1480 rtt 375ms fe80::/10 dev eth0 proto kernel metric 256 mtu 1500 rtt 375ms fe80::/10 dev sit0 proto kernel metric 256 mtu 1480 rtt 375ms ff00::/8 dev eth0 proto kernel metric 256 mtu 1500 rtt 375ms ff00::/8 dev sit0 proto kernel metric 256 mtu 1480 rtt 375ms default via ::131.107.65.121 dev sit0 metric 1024 mtu 1480 rtt 375ms unreachable default dev lo metric -1 error -101 Then, I manually, add an address to eth0 and set a route AFTER giskard:~# ip -6 addr 1: lo: <LOOPBACK,UP> mtu 3924 qdisc noqueue inet6 ::1/128 scope host 2: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100 inet6 2002:cb86:9a2b:f101:200:c0ff:fe2b:afb3/128 scope global inet6 fe80::200:c0ff:fe2b:afb3/10 scope link 3: [EMAIL PROTECTED]: <NOARP,UP> mtu 1480 qdisc noqueue inet6 ::203.134.154.43/96 scope global inet6 2002:cb86:9a2b::1/128 scope global inet6 ::127.0.0.1/96 scope host inet6 ::203.7.227.1/96 scope global giskard:~# ip -6 route ::/96 via :: dev sit0 metric 256 mtu 1480 rtt 375ms 2002:cb86:9a2b:f101::/64 dev eth0 metric 1024 mtu 1500 rtt 375ms fe80::/10 dev eth0 proto kernel metric 256 mtu 1500 rtt 375ms fe80::/10 dev sit0 proto kernel metric 256 mtu 1480 rtt 375ms ff00::/8 dev eth0 proto kernel metric 256 mtu 1500 rtt 375ms ff00::/8 dev sit0 proto kernel metric 256 mtu 1480 rtt 375ms default via ::131.107.65.121 dev sit0 metric 1024 mtu 1480 rtt 375ms unreachable default dev lo metric -1 error -101 Similiar I manully add an address and route to caliban [EMAIL PROTECTED]:~$ /sbin/ip -6 addr 1: lo: <LOOPBACK,UP> mtu 3924 qdisc noqueue inet6 ::1/128 scope host 2: eth0: <BROADCAST,MULTICAST,PROMISC,UP> mtu 1500 qdisc pfifo_fast qlen 100 inet6 fe80::200:e8ff:feda:9854/10 scope link 3: eth1: <BROADCAST,MULTICAST,PROMISC,UP> mtu 1500 qdisc pfifo_fast qlen 100 inet6 2002:cb86:9a2b:f101:250:baff:fecb:9898/128 scope global inet6 fe80::250:baff:fecb:9898/10 scope link [EMAIL PROTECTED]:~$ /sbin/ip -6 route 2002:cb86:9a2b:f101::/64 dev eth1 metric 1024 mtu 1500 rtt 375ms fe80::/10 dev eth1 proto kernel metric 256 mtu 1500 rtt 375ms fe80::/10 dev eth0 proto kernel metric 256 mtu 1500 rtt 375ms ff00::/8 dev eth1 proto kernel metric 256 mtu 1500 rtt 375ms ff00::/8 dev eth0 proto kernel metric 256 mtu 1500 rtt 375ms default via 2002:cb86:9a2b:f101:200:c0ff:fe2b:afb3 dev eth1 metric 1024 mtu 1500 rtt 375ms unreachable default dev lo metric -1 error -101 giskard:~# ping6 sutekh.progsoc.org PING sutekh.progsoc.org(3ffe:8001:c:1::14) 56 data bytes 64 bytes from 3ffe:8001:c:1::14: icmp_seq=0 time=823.6 ms [EMAIL PROTECTED]:~$ ping6 sutekh.progsoc.org Warning: no SO_TIMESTAMP support, falling back to SIOCGSTAMP PING sutekh.progsoc.org(sutekh.progsoc.uts.edu.au) 56 data bytes >From 2002:cb86:9a2b:f101:200:c0ff:fe2b:afb3: Destination unreachable: Address >unreachable All the configuration for /proc/sys/net/ipv6/conf/all/ is set as recommended on the setup page instructions but things aren't working. Kernel version 2.2.18 in both cases. Any suggestions or ideas I should try? Thanks, Anand -- I close my eyes, only for a moment and the moment's gone All my dreams, pass before my eyes a curiosity Dust in the wind, All we are is dust in the wind Don't hang on, nothing lasts forever but the earth and sky Dust in the Wind -- Kansas, Don Kirshner
