[j-nsp] options for adding communities to an EVPN routing-instance?

[Michael Hare]

Does anyone know if it is possible and how to add communities to routes to an EVPN routing-instance in the instance configuration itself?  For example, in bgp.evpn.0, I have

2:a.b.c.d:200::1900::00:1f:45:a0:1b:bb/304 (2 entries, 0 announced)
...
                Communities: target:64900:200

I'd like to be able to add, for example, $MYISP:12345 to the mac announcements.  I haven't tried but am guessing I could do this in the IBGP export policy using 'from instance' but this is suboptimal because then my PE will need different export policies whereas they are currently now all congruent.

Sorry if this is a rookie question, I don't have experience with l3vpns or route leaking.

-Michael