Re: [WIRELESS-LAN] IPv6 drains battery of mobile devices?
> On Oct 9, 2017, at 1:26 AM, Frans Panken 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" 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 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 II701-231-8527 >> 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 II701-231-8527 North Dakota State University ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/discuss.
Re: [WIRELESS-LAN] IPv6 drains battery of mobile devices?
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 On 06/10/2017, 18:34, "The EDUCAUSE Wireless Issues Constituent Group Listserv on behalf of Curtis, Bruce" 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 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 II701-231-8527 >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.
Re: [WIRELESS-LAN] IPv6 drains battery of mobile devices?
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 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 II701-231-8527 North Dakota State University ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/discuss.
RE: [WIRELESS-LAN] IPv6 drains battery of mobile devices?
For those of you running Cisco controllers, there is a feature called “RA Throttling” that can help with this. Hector Rios Louisiana State University From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Mike King Sent: Friday, October 06, 2017 7:33 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: [WIRELESS-LAN] IPv6 drains battery of mobile devices? 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. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/discuss.
Re: [WIRELESS-LAN] IPv6 drains battery of mobile devices?
I did not see the newer RFC referenced in the comments. Check it out if you haven't. https://www.rfc-editor.org/rfc/rfc7772.txt On Fri, Oct 6, 2017 at 9:12 AM, Daniel Eklund wrote: > According to the RFC 4861: > > MaxRtrAdvInterval > The maximum time allowed between sending > unsolicited multicast Router Advertisements from > the interface, in seconds. MUST be no less than 4 > seconds and no greater than 1800 seconds. > > Default: 600 seconds > > > So, by default it's 5 minutes which is 12 times per hour. Maybe this > person's institution has made changes to their settings for some reason. > > > On Fri, Oct 6, 2017 at 8:32 AM, Mike King 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. >> >> > > > -- > > Daniel Eklund > Network Planning Manager > ITS Infrastructure > 734-763-6389 <(734)%20763-6389> > -- Daniel Eklund Network Planning Manager ITS Infrastructure 734-763-6389 ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/discuss.
Re: [WIRELESS-LAN] IPv6 drains battery of mobile devices?
According to the RFC 4861: MaxRtrAdvInterval The maximum time allowed between sending unsolicited multicast Router Advertisements from the interface, in seconds. MUST be no less than 4 seconds and no greater than 1800 seconds. Default: 600 seconds So, by default it's 5 minutes which is 12 times per hour. Maybe this person's institution has made changes to their settings for some reason. On Fri, Oct 6, 2017 at 8:32 AM, Mike King 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. > > -- Daniel Eklund Network Planning Manager ITS Infrastructure 734-763-6389 ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/discuss.
Re: [WIRELESS-LAN] IPv6 drains battery of mobile devices?
For years, Windows and Apple devices automatically prefer IPv6. Moreover, we have found issues with BonJour and other functionality, when we disable IPv6. Instead we suppress ipv6 nd ra. This will, at the minimum, limit the auto-networking functionality of ipv6. --Christina Klam Network Engineer - Original Message - From: "Mike King" To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Sent: Friday, October 6, 2017 8:32:54 AM Subject: [WIRELESS-LAN] IPv6 drains battery of mobile devices? 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. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/discuss.
