loopback?()
Returns true if the ipaddr is a loopback address.
# File lib/ipaddr.rb, line 263 def loopback? case @family when Socket::AF_INET @addr & 0xff000000 == 0x7f000000 when Socket::AF_INET6 @addr == 1 else raise AddressFamilyError, "unsupported address family" end end