On Fri, 10 Jul 2009 14:05:01 +0200 (CEST)
Jan Engelhardt [off-list ref] wrote:

Hi,


it's impossible to do this, and the error message does not say why 
that is so. No word in dmesg either.


# ip a a fc00::49/128 peer fc00::7 dev sit7
RTNETLINK answers: Invalid argument

You will need to walk through the path in the kernel.
In worst case, it means adding kernel printk's.

Then if you want to be nice, make a patch to ipaddr.c in iproute
utilities so command line can find the error before passing to
kernel and give a nice error :-)

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