ipv6: fix unused var warning

Change-Id: I36082e58013bf57715a574f765ab00c8ee6600b9
ipv6: revert rx_bogusHost to int32 for wire compat

Change-Id: I5a7551d5d5a33776eff729ce28a1f179e45a8772
ipv6: rename scaffolding functions to make it obvious they need to go away

Change-Id: Ib24faa559573988d7015ab2356d43f5a52be620b
work in progress