Added comments, fixed formatting for IPv6 with port number.
Added comments, fixed formatting for IPv6 with port number.

FossilOrigin-Name: 3811a844e550a8d4095298c5bab3b32012f60cadcdbbc21d2153dbedf8056b96
7u83/actube,7u83/actube,7u83/actube,7u83/actube,7u83/actube