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Re: [Idr] Using BGP to advertise SD-WAN tunnels end point's private IPv6 addresses. (was registering tunnel types

Gert Doering <gert@space.net> Mon, 05 November 2018 17:00 UTC

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Date: Mon, 05 Nov 2018 17:59:59 +0100
From: Gert Doering <gert@space.net>
To: Linda Dunbar <linda.dunbar@huawei.com>
Cc: Fred Baker <fredbaker.ietf@gmail.com>, "idr@ietf.org" <idr@ietf.org>, "int-area@ietf.org" <int-area@ietf.org>, "ipv6@ietf.org" <ipv6@ietf.org>
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Subject: Re: [Idr] Using BGP to advertise SD-WAN tunnels end point's private IPv6 addresses. (was registering tunnel types
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Hi,

On Mon, Nov 05, 2018 at 10:40:36AM +0000, Linda Dunbar wrote:
> If a CPE-1 has private IPv6 addresses for its ports behind NAT, and CPE-2 has IPv4 address, can CPE-1 communicate with CPE-2 by the NAT's IPv4 address? 

Since there are no private IPv6 addresses, no.

Generally speaking, if CPE1 has only IPv6 addresses and CPE2 has only
an IPv4 address, the answer is no as well, unless there is a NAT64 
involved somewhere.

Gert Doering
        -- NetMaster
-- 
have you enabled IPv6 on something today...?

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