ping: add a ping6 hard link for backwards compatibility
When invoked as "ping6", ping will now attempt to use ICMPv6 for hostnames
that resolve both IPv4 and IPv6 addresses.
asomers on Nov 26 2020, 4:07 PM.Authored by
Ignoring the test case (but thanks for adding it) this looks good to me.
You may or may not merge the two #ifdef INET6 blocks; either way, go ahead please and commit it.