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SubjectRe: neighbour table overflow and kernel 2.2.12?
> The kernel logger is spewing out messages about "Neighbour table overflow"
> to the tune of several thousand per minute.

Nearly same over here. We have a linux router (eight fastether-interfaces)
which had the nearly same effect two times. But there was no lockup, just one
message about the overflow.

Simple routing (every eth own /24 subnet), one or two special routes.
When having this warning message, the route cache had about 25 entries and
the ARP cache about 80.

Kernel was 2.2.12, too.

> Routing is all static at the moment, no discovery protocols involved.

Same over here.

.config excerpt:

CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_IP_ALWAYS_DEFRAG=y
CONFIG_IP_ROUTER=y
CONFIG_SKB_LARGE=y

> SMP=yes

UP here.


I can provide detailed info on the box if needed.


Best regards,
Daniel

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