MFC r283666:
MFC r283666:

Report the MTU consistently as specified in
https://tools.ietf.org/html/rfc6458
Thanks to Irene Ruengeler for helping me to fix this bug.

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