if_rtdel: error 47

[Li, Qing]

> 
> Hi,
>          Thanks for looking!  Yes, they are the same.  However, I
> dont see this error on the other box which does not have ipv6
> negotiation on the line (set bundle enable ipv6cp).  Only since
> enabling ipv6 negotiation and oddly enough only after a few days did
> the error start happening.
> 

   I went through the change history and noticed I made the
   following changelist for IPv4, 

http://svn.freebsd.org/viewvc/base/head/sys/netinet/in.c?r1=201811&r2=20
3401

   Maybe related and something similar needs to be done for IPv6 ...
 
> 
> The other issue I noticed was that the link local ipv6 stopped
> working on a test machine.
> eg
> pinging the multicast address on the local link stopped working for
> some reason
> ie  ping ff02::1%ng155
> stopped working on a machine I was testing just the day
> before.  Killing the l2tp session and having it reconnect fixed the
> issue.
> 

  Nothing obvious comes to mind at the moment.

>
> OK, another issue I am seeing. The routing table seems to have "junk"
> in it.  eg
> 

  That explains the errno = 47, EAFNOSUPPORT.

  I also noticed in your routing table output that all of entries
  that have junk are related to the ng interface.

  -- Qing