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Re: Reducing the battery impact of ND

"cb.list6" <cb.list6@gmail.com> Sat, 11 January 2014 17:47 UTC

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Date: Sat, 11 Jan 2014 09:47:16 -0800
Message-ID: <CAD6AjGQF-xfaJkCp5gHP9aRqGtey8Kg2HMNhbJLbzz4vfPwF8g@mail.gmail.com>
Subject: Re: Reducing the battery impact of ND
From: "cb.list6" <cb.list6@gmail.com>
To: Tim Chown <tjc@ecs.soton.ac.uk>
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Cc: 6man Chairs <6man-chairs@tools.ietf.org>, 6man WG <ipv6@ietf.org>, Andrew 👽 Yourtchenko <ayourtch@gmail.com>
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I don't have much to offer this thread yet from a technical solution
perspective, but i can share that Samsung and others deactivate ipv6 when
the smartphone screen is off due to battery issues with ipv6 and wifi.

This is not for anyone to judge, this is a problem statement and the
current solution deployed on 10s (100s) of millions of hosts that go from
dual-stack to single stack when the screen is off. We do do quantitative
battery drain studies, and the ipv6-off configuration is meaningful better.

These phones do a fair amount of background traffic to major ipv6 enabled
clouds (google , facebook, yahoo ...) when the screen is of, so that is an
ipv6 opportunity missed ... we need a better solution to take to the
smartphone oems so they can keep ipv6 on and still meet the battery drain
targets.

We already know home routers dont get upgraded ever, so a client based
solution would be nice.  Said another way, i can help drive deployment of a
client based solution.

CB

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