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Re: [v6ops] [dhcwg] Fwd: New Version Notification for draft-link-dhc-v6only-01.txt

Ted Lemon <mellon@fugue.com> Tue, 10 December 2019 19:44 UTC

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From: Ted Lemon <mellon@fugue.com>
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Date: Tue, 10 Dec 2019 11:44:22 -0800
In-Reply-To: <2D09D61DDFA73D4C884805CC7865E61153708DD1@GAALPA1MSGUSRBF.ITServices.sbc.com>
Cc: "Bernie Volz (volz)" <volz@cisco.com>, "dhcwg@ietf.org" <dhcwg@ietf.org>, V6 Ops List <v6ops@ietf.org>
To: "STARK, BARBARA H" <bs7652@att.com>
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Subject: Re: [v6ops] [dhcwg] Fwd: New Version Notification for draft-link-dhc-v6only-01.txt
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On Dec 10, 2019, at 11:41 AM, STARK, BARBARA H <bs7652@att.com> wrote:
> Consider the possibility of a CE router that says: “Proper DHCP servers don’t send bogus addresses. I’m receiving a bogus address from this DHCP server. That means this DHCP server must be compromised, which means the network is compromised, which means I can trust nothing on this network. 

That DHCP client would be a DHCP client that doesn’t implement the specification, since the specification would say MUST accept yiaddr=0.0.0.0 when in v6-only mode.   That client would not be asking for the v6-only option, and hence would never see a yiaddr of 0.0.0.0.

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