Hi, On Mon, Mar 7, 2016 at 3:04 AM, Gert Doering <g...@greenie.muc.de> wrote:
> > Then its only register-dns that remains... > > Yep. Its semantics are not totally clear to me (the code does more, like > turn off dns cache off/on) and I have no idea whether there's a real API > for that... Yes, it does much more than "ipconfig /registerdns": it restarts dns service, flushes the dns cache, and then does registerdns. Looks like someone decided to throw everything at it. In my own very limited tests I've never seen anything more than registerdns needed to get the DNS server registered. In fact, a manual "dhcp /renew" after the connection comes up also appears to do the job: this is not the same as the --dhcp-renew option, though. But I haven't tested any of this beyond a single windows 7 machine, so cant say for use that ipconfig /registerdns or dhcp renew is enough. Considering that many folks appear to be dependent on this option, we have to keep it as is, I guess. AFAIK, there is no API for either of these. There are some undocumented calls like DnsFlushReseolverCache in dnsapi.dll but there are no official docs on them. The service can be started and restarted using API but its no less pain than using "net stop" and "net start" I suppose we need to just queue this request to the service and let it do it asynchronously in a separate thread. Which is not very unlike the current fork_to_self approach. It shouldn't be hard to add that to interactive.c Selva
