IPAddr#hton

# File tmp/rubies/ruby-4.0.0/lib/ipaddr.rb, line 264
def hton
  case @family
  when Socket::AF_INET
    return [@addr].pack('N')
  when Socket::AF_INET6
    return (0..7).map { |i|
      (@addr >> (112 - 16 * i)) & 0xffff
    }.pack('n8')
  else
    raise AddressFamilyError, "unsupported address family"
  end
end