> On Oct 9, 2017, at 1:26 AM, Frans Panken <frans.pan...@surfnet.nl> wrote: > > Thanks Bruce for the nice overview and +1 for the last remark. > > A search for battery drain and IPv6 gives you tons of hits. I tested the RA > myth one year ago by two SSIDs with different RAs (1 SSID with 500 RA/h and > the other 30/h). Outcome: hardly any effect. (inspite of the RFC on this > topic where Cisco and Google blame IPv6: > https://www.rfc-editor.org/rfc/rfc7772.txt) > > My experience is that mainly Samsung devices (upto but not including the S7) > suffer from battery drain with IPv6. I saw no significant effects on iPhones, > HTC devices and windows phones. I found an article that confirm this, blaming > Samsung for choosing their own firmware and doing a bad job (sorry, cannot > find the article any more). > > See also: https://issuetracker.google.com/issues/36949115 > -Frans
The March 2 2016 entry on the bottom of the Google issue tracker page mentions the Samsung issue. These two articles give more history and detail. https://lists.gt.net/nsp/ipv6/54641 http://commandline.ninja/2014/01/02/samsung-galaxy-s4-ipv6-borked/ I’m glad Samsung seems to have fixed the issue in S7 and later. > On 06/10/2017, 18:34, "The EDUCAUSE Wireless Issues Constituent Group > Listserv on behalf of Curtis, Bruce" <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU on > behalf of bruce.cur...@ndsu.edu> wrote: > >> >> This is an issue with the configuration on that particular WiFi network and >> not an architectural issue with IPv6. >> >> http://www.ibtimes.co.uk/why-your-smartphone-battery-being-drained-google-cisco-blame-ipv6-network-misconfiguration-1544393 >> >> >> IPv4 with NAT does have some architectural issues. >> >> https://www.computerworld.com/article/2494064/internet/ipv6-can-boost-mobile-performance--battery-life--proponents-say.html >> >> >> Measurements on properly configured networks show little difference in >> power. But these measurements were during active use. >> >> https://tools.ietf.org/html/draft-petrescu-v6ops-ipv6-power-ipv4-00 >> >> >> Cloudfare’s view: >> >> "That means that a v6-only mobile phone (looking at you, T-Mobile users) can >> establish a clean path to any site or mobile app behind Cloudflare instead >> of doing an expensive 464XLAT protocol translation as part of the connection >> (shaving milliseconds and conserving very precious battery life)." >> >> https://blog.cloudflare.com/always-on-ipv6/ >> >> >> >> https://blog.wirelessmoves.com/2008/03/why-ipv6-will-b.html >> >> Check out the slide titled “IPv6 brings savings in battery life” about 8 >> minutes into the video. >> >> https://www.youtube.com/watch?v=o5RbyK0m5OY >> >> >> Another RFC for network administrators. >> >> https://tools.ietf.org/html/rfc7772 >> >> >> So if you find that a specific WiFi network accelerates battery drain send >> some of the info mentioned in this thread to your local WiFi network >> administrators but don’t tell the world to turn off IPv6. >> >> >>> On Oct 6, 2017, at 7:32 AM, Mike King <m...@mpking.com> wrote: >>> >>> So I saw this on Reddit this morning. What do you guys think of this? >>> >>> >>> https://www.reddit.com/r/LifeProTips/comments/74jt7s/lpt_if_youre_in_student_halls_campus_or_hotel/ >>> ********** Participation and subscription information for this EDUCAUSE >>> Constituent Group discussion list can be found at >>> http://www.educause.edu/discuss. >>> >> >> --- >> Bruce Curtis bruce.cur...@ndsu.edu >> Certified NetAnalyst II 701-231-8527 >> North Dakota State University >> >> >> ********** >> Participation and subscription information for this EDUCAUSE Constituent >> Group discussion list can be found at http://www.educause.edu/discuss. >> > > ********** > Participation and subscription information for this EDUCAUSE Constituent > Group discussion list can be found at http://www.educause.edu/discuss. > --- Bruce Curtis bruce.cur...@ndsu.edu Certified NetAnalyst II 701-231-8527 North Dakota State University ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/discuss.
