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Re: [dhcwg] [v6ops] DHCPv6 Prefix Delegation (DHCPv6 PD) on cellular links - works ok

Bjørn Mork <bjorn@mork.no> Thu, 30 November 2017 19:03 UTC

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From: Bjørn Mork <bjorn@mork.no>
To: "Bernie Volz (volz)" <volz@cisco.com>
Cc: Alexandre Petrescu <alexandre.petrescu@gmail.com>, "dhcwg@ietf.org" <dhcwg@ietf.org>, "v6ops@ietf.org" <v6ops@ietf.org>
Organization: m
References: <7537deef-8f87-5187-1e44-595ac63a16ca@gmail.com> <6077c7a4-01c8-8b80-588f-0ef4af153487@gmail.com> <87D21F39-7C1D-4F08-A3EE-39882C8832E6@cisco.com>
Date: Thu, 30 Nov 2017 20:03:13 +0100
In-Reply-To: <87D21F39-7C1D-4F08-A3EE-39882C8832E6@cisco.com> (Bernie Volz's message of "Thu, 30 Nov 2017 16:42:59 +0000")
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Subject: Re: [dhcwg] [v6ops] DHCPv6 Prefix Delegation (DHCPv6 PD) on cellular links - works ok
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> On Nov 30, 2017, at 11:18 AM, Alexandre Petrescu <alexandre.petrescu@gmail.com<mailto:alexandre.petrescu@gmail.com>> wrote:
>
> v6opsers,
>
> We succeeded in making DHCPv6 PD work natively on a cellular link.
> I would claim it to be a first[*].
> Packet dump available upon request.
>
> The UE device is a Huawei E392u-12 USB dongle produced in 2011.  It
> hosts a baseband processor Qualcomm model MDM9600 (or model MDM9200,
> or an Intel - not sure).

MDM9200.  Not that it matters much...

> It lets all standard DHCPv6 messaging through. The DHCPv6 client
> 'odhcpv6' is running on linux laptop.

Can't help being a bit curious about the Linux driver used for this
test? PPP?  qmi_wwan?  Something else?

(crossing fingers for qmi_wwan :-)

> DHCPv6-PD is blocked on other baseband processors, including Qualcomm
> and Balong versions; they are hosted by many smartphones, USB cellular
> dongles, mobile personal WiFi hotspots and IoT devices.  A sample list
> is available upon request.

Yes, the "smarter" these things get, the harder it is to make them work
properly.


Bjørn

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