mesh network vs broadcast/multicast question

[Frank Ch. Eigler]

Dan Williams <dcbw at redhat.com> writes:

> [...]  We are letting users manually "search" for friends, which is
> a fairly lengthy process that involves jumping to each channel,
> searching for friends and activities using mDNS, then to the next
> channel [...]

Does this mean that one needs a school server/bridge in order to talk
to two differently-channeled friends ?

- FChE