``0xFFFF029A`` ``65535:666``. :rfc:`7999` documents sending prefixes to
EBGP peers and upstream for the purpose of blackholing traffic.
Prefixes tagged with the this community should normally not be
- re-advertised from neighbors of the originating network. It is
- recommended upon receiving prefixes tagged with this community to
- add ``NO_EXPORT`` and ``NO_ADVERTISE``.
+ re-advertised from neighbors of the originating network. Upon receiving
+ ``BLACKHOLE`` community from a BGP speaker, ``NO_ADVERTISE`` community
+ is added automatically.
``no-export``
``no-export`` represents well-known communities value ``NO_EXPORT``