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Today's Topics:
1. Re: DHCPv6 and RA (Simon Hobson)
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Message: 1
Date: Thu, 10 Dec 2020 17:08:20 +0000
From: Simon Hobson <dh...@thehobsons.co.uk>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: DHCPv6 and RA
Message-ID: <f410571e-03d7-4597-912a-0838224e5...@thehobsons.co.uk>
Content-Type: text/plain; charset=us-ascii
Usman Ahmad <usman....@gmail.com> wrote:
> 1- DHCPD6.CONF doesn't have any option to mention a gateway for DHCP6
> clients. Note that i need to configure multiple subnet6 so the gateway for
> each subnet will be different.
> 2- I have tried to include external configuration files to dhcpd6.conf using
> attribute include but it isn't accepting.
As Steinar says, DHCP (as well as the rest of address management)works somewhat
differently in the IPv6 world to how it works in the IPv4 world.
Information on the subnets (called prefixes in the IPv6 world) that are on the
network segment come via RA announcements from the router(s) attached to that
segment. Each router will send RAs which list the prefixes in use, whether they
are considered "on list", and how addresses are assigned. You need to
specifically set one or more flags (and TBH I can't remember the combination
needed) in an RA to signal to a host that it should use DHCP - otherwise IIRC
the default is that the host will not use DHCP at all.
And note that Android devices don't support DHCPv6 at all as a matter of policy
from Google.
Simon
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End of dhcp-users Digest, Vol 146, Issue 4
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