advisory attribute in IRR

well since we're into deprecated attributes, what did the comm_list
attribute do? It appears to be gone now from that route, but at one time
it was there and I think I can still dig through some to find it. The
attribute always said, comm_list: comm_NSFNET

I believe that all routes translated from the NSFnet PRDB to the RADB
were tagged with the comm_NSFNET community list. As far as I know,
no one uses that information. (Or the other three communities that
Curtis cited.)

If you would like the obsolete comm_list and advisory attributes
removed from RADB route objects for which you are an authorized
maintainer, send a note requesting this to and we
will do it for you.