[docs] [issue33921] Explain that '' can be used to bind to all interfaces for the AF_INET address family in the docs

Ned Deily <nad@python.org> added the comment: John, since you raised the issue, would you like to provide a doc PR? ---------- keywords: +easy nosy: +ned.deily stage: -> needs patch versions: -Python 3.5 _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue33921> _______________________________________