Why
This occasionally occurred in some linux devices which contain lots of neighbor. My solution is down below:
Solution
Change /etc/sysctl.conf
net.ipv6.neigh.default.gc_thresh1
should be 30 or 50 in default set,
we should extend it and net.ipv6.neigh.default.gc_thresh2
, net.ipv6.neigh.default.gc_thresh3
as well.
net.ipv6.route.max_size
set ipv6 route size to more then default size in case that route incomplete from kernel route table.
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