True when addr is a private/loopback/link-local/reserved IP literal — or unparseable as an IP at all (fail closed; callers only pass things believed to be addresses). Accepts bracketed IPv6.
addr
True when
addris a private/loopback/link-local/reserved IP literal — or unparseable as an IP at all (fail closed; callers only pass things believed to be addresses). Accepts bracketed IPv6.