Comment 8 for bug 2037876

@Jeremy, I haven't tried these out, theoretically since the router usually uses the first address of the subnet it should be fine, but maybe there's a way to workaround this - not sure.

But for sure if one creates a network/subnet and router and then deletes them rapidly, there will be hanging dnsmasq processes in the host and hanging ports in the host.
Repeating this will potentially starve the host from memory and port resources.