Support for 4B ASN in BGP

[Martin Mares]

Hello!

> Per-instance 4B-awareness might be implemented easily by just
> not advertising that capability (and ignoring such advertisement
> from that neighbor). That would force 2B-based communication
> with neighbor, but otherwise we can process it like 4B-aware
> BGP speaker (reconstruct 4B path from AS_PATH and AS4_PATH
> and use 4B path as internal representation).

OK. So we do not need to store it as a opaque attribute at all
(except temporarily during decoding of the update).

				Have a nice fortnight
-- 
Martin `MJ' Mares                          <mj at ucw.cz>   http://mj.ucw.cz/
Faculty of Math and Physics, Charles University, Prague, Czech Rep., Earth