ip hna: temporary fix to correctly hanlde IPv6 throw routes
This fix is related to:
http://permalink.gmane.org/gmane.linux.network/242277
http://code.metager.de/source/history/linux/stable/net/ipv6/route.c
grep or google for the changes of this revision:
b4949ab269a20e9af9a0c40729bac56e8f8a43a2
bmx: fix help for --linkPurgeTimeout
ip hna: support same MAC for different devs: remove --tunInRemotePrefix and calculate from --ipAutoPrefix which must be /56 now
ip bmx msg: support same MAC/llocal-ip for different devs (which should not be on same link\!): refactor key for dev_ip_tree as  dev.llip_key (ip and idx)