ipv6 listener only, ipv4 source addresses
[notice] Opening OR listener on [::]:0 [notice] OR listener listening on port 38153. [notice] Guessed our IP address as 126.96.36.199 (source: 188.8.131.52).
If my listening "port" is IPv6, the ip address guessed should be the IPv6 one, if available.
Practically, if the address family of the listen port should be used as the address family of the outgoing socket that detects the local addess.