> >Okay. Here's a proposal: > >1) Have a Protocols.DNS.prefer_ipv6() that chooses whether IPv6 is >preferred over IPv4 for simple lookups. Calling prefer_ipv6(1) will >result in the current behaviour, calling prefer_ipv6(0) will return to >previous behaviour. This just changes the order of responses, nothing >else.
No, add new methods for new behavior. The old function continues to return IPv4 and the new one does IPv6+IPv4. Or have some new parameter to control preference on a per call basis. We don't want global states in modules.
