Arch Linux

silverzhao

Member

Registered: 2011-07-05

Posts: 33

rt6_redirect: source isn't a valid nexthop for redirect target

I create a ipv6 tunnel for my ipv4 network, so I can visit ipv6 websites, such as http://ipv6.google.com, like this:

# ip tunnel add sit1 mode sit remote $ISATAP_SERVER local $LOCAL_IP ttl 64
# ip link set dev sit1 up
# ip addr add 2001:da8:8000:d010:0:5efe:$LOCAL_IP/64 dev sit1
# ip -6 route add default dev sit1 metric 1

where $ISATAP_SERVER is the ip address of the remote server, and $LOCAL_IP is my ipv4 address.
This is the route info for ipv6:

$ ip -6 route
2001:da8:8000:d010::/64 via :: dev sit1  proto kernel  metric 256 
fe80::/64 dev eth0  proto kernel  metric 256 
fe80::/64 via :: dev sit1  proto kernel  metric 256 
default dev sit1  metric 1

Now I can visit ipv6 websites, and everything seems OK.
But when I check the log file /var/log/everything.log, I get much information like this:

Mar  4 19:46:29 localhost kernel: [ 8073.183872] rt6_redirect: source isn't a valid nexthop for redirect target

It seems there‘s something wrong with the route for ipv6, but I can't figure it out.
I've googled this for a long time, but many is about the source file route.c, nothing helpful.
Any ideas? Thanks!

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What you are you do not see, what you see is your shadow.