fix ipv6 ping error

[yuqaf1989]

fix error for ipv6 ping ：

Ping tcp://::1:443() Failed(dial tcp: address ::1:443 too many colons in address) - time=13.526µs dns=0s
Ping tcp://::1:443() Failed(dial tcp: address ::1:443 too many colons in address) - time=18.114µs dns=0s
Ping tcp://::1:443() Failed(dial tcp: address ::1:443 too many colons in address) - time=7.675µs dns=0s