ASN's and Prefixes missing from IPv6 table

[Jørgen Hovland]

Hi,
I have no idea if this is the reason, I was going to investigate it first, 
but where I am located the following started happening a few weeks ago:

I noticed a "bgp nuke" on a testbox of mine. Some bgp peer are most likely 
sending crafted packet(s) because the testbox is not reachable from the 
internet.
This testbox is running zebra (the old one which is vulnerable) and is doing 
nothing but running zebra+bgpd, v4 and v6. The "nuke" causes the bgp daemon 
to crash. It sometimes also crash zebra (happened one time). The plan was to 
analyze the ip packets and trace the source of these nukes, but I 
unfortunately haven't had the time. It keeps getting nuked every ~1-4 days 
last time I checked.
It could just be a peer of ours and not a global phenomenon, so I wouldn't 
assume anything except perhaps for that it is happening without their 
knowledge (incompatible newly installed equipment crashing old ones etc).


j

----- Original Message ----- 
From: "Stephan Millet" <stephan at telstra.net>
To: <ipv6-ops at lists.cluenet.de>
Sent: Tuesday, March 07, 2006 6:33 AM
Subject: ASN's and Prefixes missing from IPv6 table


> Firstly my apologies for the X posting.
>
> We have noticed a sudden drop in the prefix size of the IPv6 RIB and the
> number of origin ASN's in the IPv6 network
>
> Prefixes suddenly down from ~800+ to ~720
> ASN's down from ~603 to 569
>
> This activity has taken place in the last few weeks (see
> http://bgp.potaroo.net/v6/as6447/
> http://bgp.potaroo.net/v6/as1221/
> for a comparison)
>
> Has anyone else noticed this ?
> Has anyone noticed v6 reachability no longer working to some sites ?
> Does anyone know if there has been a 'break' or 'restructure' or 
> 'rehoming'
> activity take place recently ? (Was there a 'big' 6BONE turn off ?)
>
> Any info would appreciated (on or off list)
>
> Cheers
>
> -- 
> Stephan Millet
> Telstra Internet Networking Development
> IPv6 Experimental Network
> http://vee-six.telstra.net
>
>