Linux IPv6 routing strange behaviour

Max Tulyev maxtul at netassist.ua
Wed Aug 14 12:49:23 CEST 2013


/proc/sys/net/ipv6/route/max_size - 100000. Route table grows to 100000
entries, and then drops to almost zero. Then cycle again.

But it should not be more than 14000, if mean both local and global
routes...

On 14.08.13 13:36, Hannes Frederic Sowa wrote:
> 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?
> 
> Greetings,
> 
>   Hannes
> 
> 




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