On 12/10/2014 16:14, Gert Doering wrote: > Hi, > > On Wed, Dec 10, 2014 at 12:59:40AM +0100, Jeroen Massar wrote: >> The 'whatever is faster' is actually pretty deterministic. >> >> OSX does it with a magic combo that apparently consists out of latency >> and throughput... and unless somebody figured it out the exact >> parameters are unknown. > > Yes, and if you have a well-designed network that has IPv4 follow the > same packet path as IPv6, OSX will happily flip-flop back and forth > between IPv4 and IPv6 between http request to the same server. > > Not overly deterministic, and not helpful when looking for "sometimes > it does not work" errors (like, an Apache ACL mistakenly permitting only > one of the protocols). > > Gert Doering > -- NetMaster >
Also problematic with dual-stack websites that rely on IP in their "user is authenticated" cookie. Example - Linode manager. -- staticsafe https://staticsafe.ca
