Tests if this and
addr2 have the same IP address.
This would be used to distinguish hosts in situations where different virtual hosts on the same IP address should be considered the same. Eg, if "www.example.com" and "www.example.net" have the same IP address, then a single connection can be used to talk to either of them.
See also equal_by_name, which compares by name rather than by IP address.
a Address with a resolved IP address
another Address with a resolved IP address
whether or not this and