Remove ipv6_v6only from connection options for tcp_connect calls as this causes the call to fail (at least on Ubuntu Linux). It remains for socket/listener creation. This addresses the issue in #387
Add bogon list for non-routable IPv6 subnets to avoid publishing unreachable addresses in peer book
Some fixes to help functionality/testing of IPv6:
ipv6_v6only
from connection options for tcp_connect calls as this causes the call to fail (at least on Ubuntu Linux). It remains for socket/listener creation. This addresses the issue in #387