Changed DHCPV6_PORT from 467 to 547, the correct port for DHCPv6.
Changed DHCPV6_PORT from 467 to 547, the correct port for DHCPv6.

Fixes bug 1170160.

Change-Id: Ic5a4c0cc0ed016d83bde311a38924aa98bb45e11

gkotton/vmware-nsx,gkotton/vmware-nsx