which could be different, esp. with temporary IPv6 addresses.
Could result in an erroneous SNAT result.
Add logging if different when starting test.
Check address block received in msg 6, use in logging only for now
Add logging of address block received in msg 7 if different than expected (possible SNAT)
Remove isValidPort() check in msg 5 recently added, already checked in code above
Add notes about possible externalAddressReceived() calls from peer test
Add notes about our address in PeerState2