Re: [v6ops] Updating RFC 7084

I think you are both correct.

I would consider mobile backup to be multi-homing if it occurs
automatically; for example, if my home router had a 5G radio in addition to
a fiber connection, or I had two home routers, one fed by fiber and the
other fed with a 5G Radio. However, I would not consider manually tethering
my laptop to my phone operating as a hotspot to be multi-homing. Just like
I would not consider using my neighbor's WIFi as multihoming either.

Thanks

On Wed, Nov 30, 2022 at 9:02 AM Ted Lemon <mellon@fugue.com> wrote:

> Isn’t mobile backup a form of multi-homing?
>
> Op wo 30 nov. 2022 om 09:36 schreef Chongfeng Xie <xiechf@chinatelecom.cn>
>
>> Regarding to multi-homing, home users have no needs for multi-homing, which
>> provides access by two wireline uplinks of different operators.
>> Independent 4G/5G mobile broadband has gradually become the backup of home
>> broadband, some users even prefer to use use mobile link to access the
>> Internet at home.
>>
>> Chongfeng
>> ------------------------------
>> xiechf@chinatelecom.cn
>>
>>
>> *From:* Brian E Carpenter <brian.e.carpenter@gmail.com>
>> *Date:* 2022-11-19 04:02
>> *To:* Timothy Winters <tim@qacafe.com>; IPv6 Operations <v6ops@ietf.org>
>> *Subject:* Re: [v6ops] Updating RFC 7084
>> On 19-Nov-22 03:47, Timothy Winters wrote:
>> > Hello,
>> >
>> > I've started a draft to update RFC 7084 to support prefix delegation on
>> the LAN interfaces.  The current state of IPv6 in home networks is ISP are
>> assigning prefixes of appropriate sizes but they currently are under
>> utilized due to the lack of prefix delegation on LAN interfaces.
>> >
>> > This draft is an attempt to add that support to the draft.
>> >
>> > https://datatracker.ietf.org/doc/draft-winters-v6ops-cpe-lan-pd/ <
>> https://datatracker.ietf.org/doc/draft-winters-v6ops-cpe-lan-pd/>
>> >
>> > This is only an update to 7084 at the moment, there has been some
>> discussion on the snac working group about leveraging this work as well.
>> >
>> > One item being discussed is this currently doesn't solve multi-homed
>> networks.
>>
>> As a historical note, we've spent a lot of time in the past on
>> multi-homing
>> and more or less failed (and the HOMENET approach was designed for home
>> nets,
>> not for enterprises where the problem is probably more important).
>>
>> I
>>
>> To summarise what I've said over on SNAC:
>>
>> 1. If we're going to mention PvDs in the 7084 update, I think we should
>> also mention RFC 8028. It isn't that a CE router should necessarily
>> support 8028, but that in a network that does implement 8028 on its subnet
>> routers, the following part of 8028 applies:
>>
>> 2.2.  Expectations of Multihomed Networks
>>
>>     Networking equipment needs to support source/destination routing for
>>     at least some of the routes in the Forwarding Information Base (FIB),
>>     such as default egress routes differentiated by source prefix.
>>     Installation of source/destination routes in the FIB might be
>>     accomplished using static routes, Software-Defined Networking (SDN)
>>     technologies, or dynamic routing protocols.
>>
>> Those egress routes of course lead to CE routers.
>>
>> (There is some other thinking about this topic in
>> draft-vv-6man-nd-support-mhmp).
>>
>>     Brian
>>
>>
>> >
>> > I welcome any feedback about the proposal.
>> >
>> > ~Tim
>> >
>> > _______________________________________________
>> > v6ops mailing list
>> > v6ops@ietf.org
>> > https://www.ietf.org/mailman/listinfo/v6ops
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