> You asked how to setup a tunnel, not anything else, and that didn't
> change much from what is on the above page.

Apparently it's changed just enough for it to be relevant. See below.

> Remove the first two defaults.
> 
> "route -6 delete -inet6 default", twice, should work.
> The reason why you have it twice though, might only be when it is on two
> interfaces, looks weird and is wrong either way.

First off, it's "route delete -inet6 default". Second, I can only run this
command once, and then my routing table looks like this:

Routing tables

Internet6:
Destination      Gateway            Flags
default          ::1                UG
default          ::1                UG
::1              ::1                UH
::127.0.0.0      ::1                UG
::224.0.0.0      ::1                UG
::255.0.0.0      ::1                UG
::ffff:0.0.0.0   ::1                UG
2001:5c0:8fff:fffe::28f4 2001:5c0:8fff:fffe::28f5 UH
2001:5c0:8fff:fffe::28f5 link#7             UH
2002::           ::1                UG
2002:7f00::      ::1                UG
2002:e000::      ::1                UG
2002:ff00::      ::1                UG
fe80::           ::1                UG
fe80::%xl0       link#1             U
fe80::210:4bff:fecc:1f2e%xl0 0:10:4b:cc:1f:2e   UH
fe80::%fxp0      link#2             U
fe80::207:e9ff:fe82:984c%fxp0 0:7:e9:82:98:4c    UH
fe80::%lo0       fe80::1%lo0        U
fe80::1%lo0      link#5             UH
fe80::%gif0      link#7             U
fe80::210:4bff:fecc:1f2e%gif0 link#7             UH
fec0::           ::1                UG
ff01::           ::1                U
ff02::%xl0       link#1             U
ff02::%fxp0      link#2             U
ff02::%lo0       ::1                U
ff02::%gif0      link#7             U

Further attempts at route deletion result in:

schnarff.com:~$ sudo route delete -inet6 default
writing to routing socket: No such process
delete net default: not in table

This looks thoroughly broken, but as I'm not the IPv6 expert here, I don't know
how to fix it.

> Try pinging  2001:5c0:8fff:fffe::28f5, 2001:5c0:8fff:fffe::28f4 etc and
> then try something remote, or just try something remote and see if that
> works. If you can't ping the ::28f4 then your tunnel is broken, use
> tcpdump on the IPv4 interface (fxp0 in your case) to see if you get any
> packets, like proto-41 unreach back from the remote side or from
> intermediate routers. Or if you get packets back but the kernel filters
> them out -> firewall issue.

I can't ping the ::28f4 address. When I run tcpdump (which I have to do on gif0,
not fxp0, if I want IPv6 traffic), I get:

schnarff.com:~$ sudo tcpdump -n -i gif0
tcpdump: WARNING: gif0: no IPv4 address assigned
tcpdump: listening on gif0
10:12:37.890333 2001:5c0:8fff:fffe::28f5 > 2001:5c0:8fff:fffe::28f4: icmp6: echo
request
10:12:38.890316 2001:5c0:8fff:fffe::28f5 > 2001:5c0:8fff:fffe::28f4: icmp6: echo
request
10:12:39.890308 2001:5c0:8fff:fffe::28f5 > 2001:5c0:8fff:fffe::28f4: icmp6: echo
request
10:12:40.890305 2001:5c0:8fff:fffe::28f5 > 2001:5c0:8fff:fffe::28f4: icmp6: echo
request

Looks like the other side isn't paying any attention to me. Of course, seeing
this, I noted that ::28f5 appeared to be where I was coming from, so I tried
setting that as my default route. At that point, I could ping myself (at
::28f5), but I couldn't hit, say, 2001:200:0:8002:203:47ff:fea5:3085:

schnarff.com:~$ ping6 www.kame.net
PING6(56=40+8+8 bytes) 2001:5c0:8fff:fffe::28f5 -->
2001:200:0:8002:203:47ff:fea5:3085
ping6: sendmsg: No route to host
ping6: wrote www.kame.net 16 chars, ret=-1
ping6: sendmsg: No route to host
ping6: wrote www.kame.net 16 chars, ret=-1

> Good thing about IPv6, you can destroy it and IPv4 keeps working.
> Alternatively when you have IPv4 and IPv6 native, like me, either of the
> two can die, get firewalled and it will still work ;)

I'm well aware of this...I just didn't want to start touching "default" routes,
since a simple syntax error on my part could result in the whacking of my IPv4
default route.

Given this, does the need to have some modern documentation on the subject seem
a bit more clear? ;-)

Alex Kirk
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