a = attr_optget(attr, ATTR_COMMUNITIES);
a = attr_optget(asp, ATTR_COMMUNITIES);
rde_filter_community(struct attr_flags *attr, int as, int type){	struct attr	*a;	a = attr_optget(attr, ATTR_COMMUNITIES);	if (a == NULL)		/* no communities, no match */		return (0);	return (community_match(a->data, a->len, as, type));}