MFC 1.168: Never select the PCB that has INP_IPV6 flag and is bound to :: if we have another PCB which is bound to 0.0.0.0.  If a PCB has the INP_IPV6 flag, then we set its cost higher than IPv4 only PCBs.
MFC 1.168: Never select the PCB that has INP_IPV6 flag and is bound
to :: if we have another PCB which is bound to 0.0.0.0.  If a PCB has
the INP_IPV6 flag, then we set its cost higher than IPv4 only PCBs.

Approved by:	re (scottl)

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