Re: Identify empty community list?

santiago@crfreenet.org:

There is probably no natural way to do this. Community lists currently support just variants of membership testing.

OK.

But your last idea should work: ... Expression clist ~ pair_set should work like 'exists C from clist such that C ~ pair_set'. In your example the problem is that we currently support '*' in pair_set only in the second part of the pair, like (123,*),

Ah! Got it! Thanks!

but you can write something like [(0,0)..(65535,65535)].

Therefore expression bgp_community ~ [(0,0)..(65535,65535)] should do what you want (if you have version 1.2.5, there is a bug in older ones in pair sets).

Yup, seems to work. (I have 1.2.5.) Many thanks! Cheers, /Liman