invalid: both bind and connect flags set: 0.0.0.0:0 invalid: you have to specify either BIND or CONNECT flags Unable to find a common protocol (IPv4 or IPv6) for local host: 127.0.0.1 and remote host: ::1. Unable to find a common protocol (IPv4 or IPv6) for local host: ::1 and remote host: 127.0.0.1. invalid: you have to specify either BIND or CONNECT flags invalid: the family for local and remote endpoint must be same. invalid: the family for local and remote endpoint must be same. invalid: the family for local and remote endpoint must be same.