Linux IPv6 routing strange behaviour

Hannes Frederic Sowa hannes at
Wed Aug 14 12:36:01 CEST 2013

On Wed, Aug 14, 2013 at 01:33:41PM +0300, Max Tulyev wrote:
> Hi All,
> I see the strange behaviour of my Linux routers. There are quagga and
> bird with IPv6 BGP full view. Quagga/bird reports about 13500 prefixes,
> but route table constantly grow up to 100000 routes and more. Some
> routes are duplicated 2,3,5 and even up to 20 times :( And after some
> time routing stops working completely, number of routes drops to about
> zero, and start to grow again.
> Did anyone see something like that? How I can fix it?

cat /proc/sys/net/ipv6/route/max_size?

Maybe you have to increase this value. Didn't dmesg show something?



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