Problem configuring tunnel from DD-WRT
Shadow Hawkins on Saturday, 15 November 2008 12:45:59
Hello,
I'm trying to configure a static tunnel from my WRT54GL-router running DD-WRT. My problem is that I cannot ping the remote tunnel endpoint.
The router is running the "v24-10070_crushedhat_4MB"-firmware. I read the SixXS instructions for "new Linux" and added these lines to the startup script of the router:
ip tunnel add sixxs mode sit local 94.208.191.183 remote 192.87.102.107
ip link set sixxs up
ip link set mtu 1280 dev sixxs
ip tunnel change sixxs ttl 64
ip -6 addr add 2001:610:600:41d::2/64 dev sixxs
ip -6 ro add default via 2001:610:600:41d::1 dev sixxs
Some stats from a command prompt at the router:
# ip tunnel show sixxs
sixxs: ipv6/ip remote 192.87.102.107 local 94.208.191.183 ttl 64
# ip addr show sixxs
9: sixxs@NONE: <POINTOPOINT,NOARP,UP> mtu 1280 qdisc noqueue
link/sit 94.208.191.183 peer 192.87.102.107
inet6 2001:610:600:41d::2/64 scope global
inet6 fe80::5ed0:bfb7/128 scope link
# ip -6 route show
2001:610:600:41d::/64 via :: dev sixxs metric 256 mtu 1280 advmss 1220
fe80::/64 dev eth0 metric 256 mtu 1500 advmss 1220
fe80::/64 dev eth1 metric 256 mtu 1500 advmss 1220
fe80::/64 dev vlan0 metric 256 mtu 1500 advmss 1220
fe80::/64 dev br0 metric 256 mtu 1500 advmss 1220
fe80::/64 dev vlan1 metric 256 mtu 1500 advmss 1220
fe80::/64 via :: dev sixxs metric 256 mtu 1280 advmss 1220
ff00::/8 dev eth0 metric 256 mtu 1500 advmss 1220
ff00::/8 dev eth1 metric 256 mtu 1500 advmss 1220
ff00::/8 dev vlan0 metric 256 mtu 1500 advmss 1220
ff00::/8 dev br0 metric 256 mtu 1500 advmss 1220
ff00::/8 dev vlan1 metric 256 mtu 1500 advmss 1220
ff00::/8 dev sixxs metric 256 mtu 1280 advmss 1220
default via 2001:610:600:41d::1 dev sixxs metric 1024 mtu 1280 advmss 1220
# ping6 2001:610:600:41d::1
PING 2001:610:600:41d::1 (2001:610:600:41d::1): 56 data bytes
--- 2001:610:600:41d::1 ping statistics ---
5 packets transmitted, 0 packets received, 100% packet loss
Obviously I'm making (a/some/many) mistake(s) but I can't figure out where I'm going wrong.
Problem configuring tunnel from DD-WRT
Jeroen Massar on Saturday, 15 November 2008 13:03:40
Go through the "Reporting Problems" list, there are a lot items in there which you can check already.
TCPdump is also always a good thing to check.
Problem configuring tunnel from DD-WRT
Shadow Hawkins on Saturday, 15 November 2008 13:05:59
It seems your router is not reachable:
From 2001:610:1:80bb:192:87:102:107 icmp_seq=0 Destination unreachable: Address unreachable
From 2001:610:1:80bb:192:87:102:107 icmp_seq=1 Destination unreachable: No route
My first guess is that you do now allow IP protocol 41 yourself or it is killed by your upstream party. So in effect you will not have a tunnel.
Problem configuring tunnel from DD-WRT
Shadow Hawkins on Saturday, 15 November 2008 13:29:26
I have no idea what changed in the last 5mins that didn't change in the last 5hrs but the tunnel is working now.
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