MFC: 1.119: Make sure we reprogram multicast filter on IFF_ALLMULTI.
MFC: 1.119: Make sure we reprogram multicast filter on IFF_ALLMULTI.

Approved by:	re (kensmith)

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase