Ted Lemon <mel...@fugue.com> writes: > El 15 ag 2017, a les 19:32, Toke Høiland-Jørgensen <t...@toke.dk> va escriure: >>> In both of these cases, you are better off doing what we discussed >>> earlier and setting up your own DNS cache, possibly with a whitelist >>> for domains you want to send to the ISP forwarder. >> >> Sure, and that's what I usually do. But if we can't specify that >> behaviour for homenet, at least trying all upstream DNS servers gives a >> better chance of finding one that works. > > I'm really sorry, but I'm actually having trouble contextualizing the > failure mode that you are talking about here. Didn't I agree with > you in a previous message that we should try all the upstream DNS > servers?
Hmm, right, I guess you did. My point was more that an MPvD-aware client that only uses on PvD may experience worse performance than one that uses the in-home resolver. But I guess the client should be smart enough to deal with that? >> You may be right that hacking up a working prototype isn't that hard. >> But the failure modes change from "the internet is down" or may "I >> cannot access site A", to "site A is working every third attempt, except >> it is entirely broken on device X" maybe even with an added "ah, but >> it works on device X if I go into the kitchen". > > Didn't we agree that we aren't round-robining? Yeah, but I was referring to the failure mode for MPvD vs non-MPvD clients. I.e. if one of the resolvers fails for whatever reason, only MPvD-aware clients that happen to select that PvD will notice; whereas if there's only one resolver it will be very obvious when it's not working... >> Hmm, while writing this is occurred to me that it might make sense to >> just export the ISP DNS server(s) directly in the MPvD-only RAs? > > This would certainly work, but now you can't have your nice local > resolver that does what you want. However, I think you are right > that this is the right default behavior for MPvD-aware devices. I would keep the in-home resolver for clients that do not support MPvD; and probably also announce it as a separate PvD for MPvD-aware clients? Also, I think I would prefer running a single resolver in the home, rather than running one on every router. -Toke _______________________________________________ homenet mailing list homenet@ietf.org https://www.ietf.org/mailman/listinfo/homenet
