Re: [Lwip] CoAP Implementation Guidance and IPV6_RECVERR

Mohit Sethi M <mohit.m.sethi@ericsson.com> Mon, 16 March 2020 19:58 UTC

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From: Mohit Sethi M <mohit.m.sethi@ericsson.com>
To: Christian Amsüss <christian@amsuess.com>, "core@ietf.org" <core@ietf.org>, "lwip@ietf.org" <lwip@ietf.org>
CC: "matthias.kovatsch@huawei.com" <matthias.kovatsch@huawei.com>, Carsten Bormann <cabo@tzi.org>, Olaf Bergmann <bergmann@tzi.org>
Thread-Topic: [Lwip] CoAP Implementation Guidance and IPV6_RECVERR
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Date: Mon, 16 Mar 2020 19:58:16 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/lwip/iOwW_scnIQ-9Bp1raPZalXEkPR4>
Subject: Re: [Lwip] CoAP Implementation Guidance and IPV6_RECVERR
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Hi Christian,

Yes, we (Zhen and I) as chairs are definitely interested in finishing this document. There is plenty of valuable information there.

@Authors (Matthias, Olaf, Carsten): What do you think? Do you need any help to revive and finish this document?

Zhen and Mohit

On 3/10/20 6:55 PM, Christian Amsüss wrote:

Hello CoRE and LWIG,

(retransmitting as I missed the LWIG list name oddity, please reply to
this to keep the thread intact)

working on the portability of my aiocoap library I had trouble reusing
the IPV6_RECVERR option recommended in draft-ietf-lwig-coap-06[1], and
found that it does not seem to be portable at all; unlike the
IPV6_RECVPKTINFO option recommended in the paragraph above, IPV6_RECVERR
is only mentioned in the IETF scope in this document, and otherwise
appears to be proprietary to Linux.

Is that a known shortcoming? Are there any more portable mechanisms that
can be recommended instead?

Best regards
Christian

[1]: I see has expired -- is there interest in having this continued? It
     has been valuable so far





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