Can't get IPv6 Tunnel to Work, Mac OS X 10.6

[awesomezguy]

Hey,

I'm on Mac OS X 10.6 Snow Leopard with the Cisco EPC2425 modem+router (my ISP insists on a combined one, and flashing with DD-WRT is a no no :().

I originally configured with these options:

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ifconfig gif0 create
ifconfig gif0 tunnel MY.EXTERNAL.IPV4.ADDRESS 216.66.80.26
ifconfig gif0 inet6 2001:470:1f08:136b::2 2001:470:1f08:136b::1 prefixlen 128
route -n add -inet6 default 2001:470:1f08:136b::1

But got this error

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bash-3.2# ping6 he.net
PING6(56=40+8+8 bytes) fe80::226:4aff:fe19:e8c%gif0 --> 2001:470:0:76::2
ping6: sendmsg: Can't assign requested address
ping6: wrote he.net 16 chars, ret=-1
Request timeout for icmp_seq=0
ping6: sendmsg: Can't assign requested address
ping6: wrote he.net 16 chars, ret=-1

I then decided to try using my internal DHCP server assigned IP with this line:

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ifconfig gif0 tunnel 192.168.1.14 216.66.80.26

But got this slightly different error:

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bash-3.2# ping6 he.net
PING6(56=40+8+8 bytes) fe80::226:4aff:fe19:e8c%gif0 --> 2001:470:0:76::2
Request timeout for icmp_seq=0
Request timeout for icmp_seq=1
Request timeout for icmp_seq=2

Anybody got any suggestions for me? I really like being slightly ahead in web technologies (let's lead by example ;)), so I'd love to set up an IPv6 tunnel.

[cholzhauer]

Since you are behind nat, you need to use your 192.168.1.14 address to create the tunnel 

Is your router passing protocol 41 traffic to your mac?

[awesomezguy]

As you saw in my post, I did change the config to use my internal IP, but still got timeouts.
How can I check if my router is passing protocol41?

[cholzhauer]

There isn't a way to test...you'll want to either turn off the firewall on your router to add your host to the DMZ of your router

[awesomezguy]

Done both, still won't work :(