Re:Apple and IPv6 – Happy Eyeballs
by jmount on Friday July 10, 2015 @04:53PM
(#9866640)
It would be hard to be worse. If I turn on too much of IPV6 on OSX DNS takes forever (yes I did check the IPV6 config).
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| on HN ]
Re:Apple and IPv6 – Happy Eyeballs
by breckinloggins on Saturday July 11, 2015 @01:18AM
(#9868620)
Can you file a radar for that with the specific things that are causing the slowdown? Radars are always appreciated.
Re:Apple and IPv6 – Happy Eyeballs
by the_mitsuhiko on Saturday July 11, 2015 @05:11AM
(#9869146)
Slow DNS with some configs that involve IPv6 is a known issue on OSX :(
Re:Apple and IPv6 – Happy Eyeballs
by jsmthrowaway on Saturday July 11, 2015 @06:28AM
(#9869268)
I finally pulled IPv6 resolvers out of my config for this very reason. I was getting 4+ second lookups against both Comcast and Google v6 resolvers even though direct v6 sockets worked instantly; made worse because HSTS apparently makes Chrome put "establishing secure connection" in the status bar while resolving (maybe?), so I ended up down a rabbit hole of identifying reasons for phantom TLS stalls. Finally cut down to just v4 resolvers and it's a brand new computer.
Glad to know it's not just me.
That is pretty much what I saw. I was somewhat worried if it was the AT&T modem config or OSX, but nothing I tried fixed it (including explicitly setting DNS sources and so on).