freebsd stable - Apr 2011 - IPv6 / ndp taking a long time to resolve in this weeks STABLE

Following on from what I write about CARP, I've noticed another strange
thing happening with IPv6. Things which appear not to connect, and then
connect after a few seconds. To me it looks like ndp is having a
hard time mapping addresse to ether addresses. What I see is that
if a ping doesnt work and I look at the ndp, it has 'no entry' in
it for at least 5 seconds. Eventually it gets one, anbd thenm everyhting
is fast as ever. But all a bit strange - ndp problems would epxlain
what I was seeing with CARP too.

Am going to try and set up a little test network here to experiment with
this later today, in the meantime, has anyone else had IPv6 issues with
a recent stable ?

-pete.

I haven't modified the ndp related code for quite a long time, but recently
have seen
some postings regarding incomplete ndp entries (still catching up on emails).

Changes committed in the past year or so were related to locking and memory
leak, not
functional updates.

I have seen this issue with ARP, where incoming ARP requests are not completing
the entries until an explicit outgoing packet is generated right after the
system boots.

Email me when you recreate the problem.

--Qing

> -----Original Message-----
> From: owner-freebsd-stable@freebsd.org [mailto:owner-freebsd-
> stable@freebsd.org] On Behalf Of Pete French
> Sent: Wednesday, April 13, 2011 3:14 AM
> To: freebsd-stable@freebsd.org
> Subject: IPv6 / ndp taking a long time to resolve in this weeks STABLE
> 
> Following on from what I write about CARP, I've noticed another strange
> thing happening with IPv6. Things which appear not to connect, and then
> connect after a few seconds. To me it looks like ndp is having a
> hard time mapping addresse to ether addresses. What I see is that
> if a ping doesnt work and I look at the ndp, it has 'no entry' in
> it for at least 5 seconds. Eventually it gets one, anbd thenm
> everyhting
> is fast as ever. But all a bit strange - ndp problems would epxlain
> what I was seeing with CARP too.
> 
> Am going to try and set up a little test network here to experiment
> with
> this later today, in the meantime, has anyone else had IPv6 issues with
> a recent stable ?
> 
> -pete.
> 
> _______________________________________________
> freebsd-stable@freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-stable
> To unsubscribe, send any mail to "freebsd-stable-
> unsubscribe@freebsd.org"