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Re: DHCPv6 subscriber learning default gateway

Brian E Carpenter <brian.e.carpenter@gmail.com> Fri, 10 March 2017 19:31 UTC

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Subject: Re: DHCPv6 subscriber learning default gateway
To: Naveen Kottapalli <naveen.sarma@gmail.com>, sthaug@nethelp.no
References: <CANFmOtnDgu=L3MKW7LZwR4Wg9zGDxkfsT7MZhcmOb=dBEBfUMQ@mail.gmail.com> <20170310.080331.41692443.sthaug@nethelp.no> <CANFmOtkgC9vHqg=5b4198QUYOrFJWSVL1xTOtdV5mRdBe4NbeQ@mail.gmail.com> <CANFmOtmHDkR4y40Cp4PNL30RNAxDvT_p6K_v8ZE29FBf00f2jQ@mail.gmail.com>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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Date: Sat, 11 Mar 2017 08:31:11 +1300
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On 10/03/2017 20:43, Naveen Kottapalli wrote:
> +v6ops, 6man
> 
> Yours,
> Naveen.
> 
> On 10 March 2017 at 12:41, Naveen Kottapalli <naveen.sarma@gmail.com> wrote:
> 
>> Okay.  Can you tell which parameters of RA will convey the default gateway
>> address?  

You need to read RFC4861 to understand the relevant details of RA.

>> Also, can you point me to the document where it is mentioned that
>> a DHCPv6 subscriber has to use RS-RA for resolving gateway address?

Section 7.2.2 of RFC6434 explains this (but the wording could be clearer, perhaps).
The basic point is that RFC4861 is effectively mandatory and DHCPv6 is optional.

You are not the only person who thinks this is a gap in DHCPv6.

   Brian

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