Revert "Merge pull request #212 from Pomax/multicast"

This reverts commit d84a0de5e0868d4ebea5d111f65f856cddccc55c, reversing
changes made to a3fd4e436d94d40ca2538003c240e0becd9d46cb.
Referencing reverted ceci
Merge pull request #219 from mozilla/revert_multicast_pull_request_212

Revert multicast pull request 212