10 May
2015
10 May
'15
12:01 a.m.
On 09/05/2015 23:33, Karl Auer wrote:
IPv4 ARP, for example, hits every on-subnet neighbour; the IPv6 equivalent uses multicast to hit only those neighbours that happen to share the same 24 low-end L3 address bits as the desired target - a statistically much smaller subset of on-link neighbours, and in "normal" subnets typically only one host. Only chatter that really should go to all hosts does so - such as router advertisements.
Except when the IPv6 solicited-node multicast groups cause $VENDOR switch meltdown: http://blog.bimajority.org/2014/09/05/the-network-nightmare-that-ate-my-week...