[SR-Users] DNS support

Dear sirs and madams, I was wondering what is the current support for DNS fallback in the 3.1.x branch . Lets assume we have a new dialog started and the name in the To field needs to be resolved via a NAPTR. Kamailio sends a NAPTR request, gets 3 SRVs , each with a number of A or AAAA records. The best/most suitable SRV is selected, however no response is returned from any of the addresses in the A records. Now, we should go the second SRV and try the A records in there and so on. My question is how much from this kind of dns fallback algorithm is supported ? (I hope my explanation wasn't too confusing) Thank you, Costin Radu