"""version.py

Created by Thomas Mangin on 2012-07-17.
Copyright (c) 2009-2017 Exa Networks. All rights reserved.
License: 3-clause BSD. (See the COPYRIGHT file)
"""


class Version(int):
    BGP_4 = 4  # RFC 4271 - BGP version 4

    def pack(self):
        return bytes([self])
