All things related to multicast

[John Kristoff <>]

To avoid the potential problem of a rogue default IGMP querier on a
subnet, would it be useful to have hosts learn their default IGMP
querier (usually the upstream router) statically or via an option from a
DHCP server?

If I recall, the router with the lowest IP on a subnet supporting IGMP
will by default act as the IGMP querier for the subnet.  This means that
anyone host with a lower IP address, or even an aggressive rogue, could
cause problems.

I'd be interested to hear if anyone has run into any problems that
something along these lines may fix.

John