1. in a machine, configure 3000 ipv6 address in one interface for i in {1..3000}; do ip -6 addr add 4001:5013::$i/0 dev eth0; done
2. in other machine, ping6 the upper configured ipv6 address, then lots of lost packets ip -6 addr add 4001:5013::0/64 dev eth0 for i in {1..2000}; do ping6 -q -c1 4001:5013::$i; done; 3. increasing the gc thresh can handles these lost sysctl -w net.ipv6.neigh.default.gc_thresh1=2000 sysctl -w net.ipv6.neigh.default.gc_thresh2=3000 sysctl -w net.ipv6.neigh.default.gc_thresh3=4000 sysctl -w net.ipv6.route.gc_thresh=3000 sysctl -w net.ipv6.route.max_size =3000 -Roy -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html