
In #786, we did skip it in the daily, but not for the others. When running ./runtest on MacOS, we will get the failure. ``` couldn't open socket: host is unreachable (nodename nor servname provided, or not known) ``` The reason is that TCL 8.5 doesn't support ipv6, so we skip tests tagged with ipv6. This also revert #786. Signed-off-by: Binbin <binloveplay1314@qq.com>