[Bug 591869] Re: CONFIG_IPV6_SIT_6RD is disabled in kernel config

[Nathan Lutchansky]

I removed the needs-kernel-logs and needs-upstream-testing tags because
I don't think there's anything that needs to debugged or checked
upstream. I'm not reporting a software failure; I'm just asking for a
config option to be turned on. (If there's a more appropriate place to
make this kind of request, please let me know.)

Just to confirm, I tested to make sure that the latest Maverick kernel
(2.6.35-2.2 now) does not have 6rd support:

root at maverick:~# uname -a
Linux maverick 2.6.35-2-generic #2-Ubuntu SMP Tue Jun 8 19:15:10 UTC 2010 i686 GNU/Linux
root at maverick:~# grep 6RD /boot/config-$(uname -r)
# CONFIG_IPV6_SIT_6RD is not set
root at maverick:~# ip tunnel add sit1 mode sit local 10.100.100.1 ttl 64
root at maverick:~# ip tunnel 6rd dev sit1 6rd-prefix 2001:0db8::/32 6rd-relay_prefix 10.0.0.0/8
ioctl: Invalid argument
root at maverick:~# 

If I grab the 2.6.35-2 source package, I can add CONFIG_IPV6_SIT_6RD=y
to debian.master/config/config.common.ubuntu and rebuild new kernel
packages with 6rd support.

Using my custom-built kernel package with CONFIG_IPV6_SIT_6RD, I get the
following result from the above test:

root at maverick:~# uname -a
Linux maverick 2.6.35-2-generic #2 SMP Wed Jun 9 23:52:10 EDT 2010 i686 GNU/Linux
root at maverick:~# grep 6RD /boot/config-$(uname -r)
CONFIG_IPV6_SIT_6RD=y
root at maverick:~# ip tunnel add sit1 mode sit local 10.100.100.1 ttl 64
root at maverick:~# ip tunnel 6rd dev sit1 6rd-prefix 2001:0db8::/32 6rd-relay_prefix 10.0.0.0/8
root at maverick:~# ip tunnel show sit1
sit1: ipv6/ip  remote any  local 10.100.100.1  ttl 64  6rd-prefix 2001:db8::/32 6rd-relay_prefix 10.0.0.0/8
root at maverick:~# 

Let me know if you need further justification for this request, or if I
should raise the discussion in a different venue.  Thanks.

-- 
CONFIG_IPV6_SIT_6RD is disabled in kernel config
https://bugs.launchpad.net/bugs/591869
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