The following text was removed in https://datatracker.ietf.org/doc/html/draft-ietf-grow-bgp-gshut-11
Note that in the case where an AS is aggregating multiple routes under a covering prefix, it is recommended to filter out the GRACEFUL_SHUTDOWN community from the resulting aggregate BGP route. By doing so, the setting of the GRACEFUL_SHUTDOWN community on one of the aggregated routes will not let the entire aggregate inherit the community. Not doing so would let the entire aggregate undergo the graceful shutdown behavior. Does anyone remember why? Kind Regards, Jakob
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