Re: [v6ops] out-of-focus: why DHCPv6 breaks Android computers?

Scott Morizot <tmorizot@gmail.com> Mon, 28 October 2019 22:53 UTC

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From: Scott Morizot <tmorizot@gmail.com>
Date: Mon, 28 Oct 2019 17:53:23 -0500
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To: Simon Hobson <linux@thehobsons.co.uk>
Cc: IPv6 Operations <v6ops@ietf.org>
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Subject: Re: [v6ops] out-of-focus: why DHCPv6 breaks Android computers?
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On Mon, Oct 28, 2019, 16:11 Simon Hobson <linux@thehobsons.co.uk>; wrote:

> Could an alternative explanation be along the lines of :
> User turns on DHCPv6 server -> CPE configures it's RA service to label the
> network as managed
> End user device receives RA and finds the network is managed -> it turns
> off SLAAC
> As the EU device has disabled SLAAC and doesn't support DHCPv6, it now
> loses IPv6 connectivity
>

No. Managed and autoconfig are separate and independent parts of the RA. We
turn the former on and the latter off on most subnets at work, but I
definitely know from experience that if you turn both on operating systems
that support both will usually happily configure *both* a DHCPv6 *and* a
SLAAC address.

>