Re: 2.4.21+ - IPv6 over IPv4 tunneling b0rked

Pekka Savola
2003-07-10T15:53:53Z

On Fri, 11 Jul 2003, YOSHIFUJI Hideaki / [iso-2022-jp] ^[$B5HF#1QL@^[(B wrote:
> In article <20030710154302.GE1722@zip.com.au> (at Fri, 11 Jul 2003 01:43:03 +1000), CaT <cat@zip.com.au> says:
>
> > With 2.4.21-pre2 I can get a nice tunnel going over my ppp connection
> > and as such get ipv6 connectivity. I think went to 2.4.21 and then to
> > 2.4.22-pre4 and bringing up the tunnel fails as follows:
> :
> > ip addr add 3ffe:8001:000c:ffff::37/127 dev sit1
> > ip route add ::/0 via 3ffe:8001:000c:ffff::36
> > RTNETLINK answers: Invalid argument
>
> This is not bug, but rather misconfiguration;
> you cannot use prefix::, which is mandatory subnet routers
> anycast address, as unicast address.

While technically correct, I'm still not sure if this is (pragmatically)
the correct approach. It's OK to set a default route to go to the
subnet routers anycast address (so, setting a route to prefix:: should
not give you EINVAL).

--
Pekka Savola "You each name yourselves king, yet the
Netcore Oy kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings