IPv6 Woes...

Bruce M. Simpson bms at FreeBSD.org
Mon Jun 25 19:05:34 UTC 2007

Is your routing table correct? My default route entry for IPv6 just 
looks like this:

default                           fe80::%gif0                   
UGS        gif0

and gif0 just looks like this:

gif0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1280
        tunnel inet a.b.c.d -> x.x.x.x
        inet6 fe80::XXX:XXX:XXXX%gif0 prefixlen 64 scopeid 0x8
        inet6 2001:ZZZ:ZZZ::ZZZZ:ZZZZ prefixlen 128

In the output you posted, the next-hop of 2001:4980:1::5 will need to be 
resolved via NDP (hence the LW flags).

You already have a 1:1 endpoint mapping due to the use of the gif IPIP 
header, so the upstream shouldn't need any other tag to demux your 
traffic. You shouldn't need to do anything special with Ethernet in your 

Hope this helps.


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