Re: [tsvwg] I-D Action: draft-ietf-tsvwg-natsupp-16.txt
Michael Tuexen <Michael.Tuexen@lurchi.franken.de> Mon, 27 July 2020 20:13 UTC
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From: Michael Tuexen <Michael.Tuexen@lurchi.franken.de>
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Date: Mon, 27 Jul 2020 22:12:52 +0200
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To: mohamed.boucadair@orange.com
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Subject: Re: [tsvwg] I-D Action: draft-ietf-tsvwg-natsupp-16.txt
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> On 27. Jul 2020, at 14:04, mohamed.boucadair@orange.com wrote: > > Hi Michael, > > Please see inline. > > Cheers, > Med > >> -----Message d'origine----- >> De : Michael Tuexen [mailto:Michael.Tuexen@lurchi.franken.de] >> Envoyé : dimanche 26 juillet 2020 12:03 >> À : BOUCADAIR Mohamed TGI/OLN <mohamed.boucadair@orange.com> >> Cc : tsvwg@ietf.org >> Objet : Re: [tsvwg] I-D Action: draft-ietf-tsvwg-natsupp-16.txt >> >>> In any case, I'm afraid you will need to add details such as: amount >> of time/resources a NAT can wait for out of order fragments. You may >> reuse some of the text from RFC 6146, including the default frag >> timeout. >>> >>> * Consider this change to align with REQ-13 of RFC4787: >>> >>> OLD: >>> When an SCTP packet has to be fragmented by the NAT function and >> the >>> IP header forbids fragmentation a corresponding ICMP packet SHOULD >> be >>> sent. >>> >>> NEW: >>> When an SCTP packet has to be fragmented by the NAT function and >> the >>> IP header forbids fragmentation, the NAT MUST send back an ICMP >> message >>> "Fragmentation needed and DF set" to the internal host. >> Changed to >> <t>When an SCTP packet has to be fragmented by the NAT function and >> the IP header forbids fragmentation, the NAT MUST send back a >> corresponding ICMP message to the internal host. >> >> since it covers IPv4 and IPv6. > > [Med] The wording is IPv4-specifc: "When an SCTP packet ** has to be fragmented **". Hmm. My view is that an IPv6 header always forbids fragmentation... So maybe a bette workding helps: <t>When an SCTP packet can not be sent by the NAT function due to MTU issues and the IP header forbids fragmentation, the NAT MUST send back a corresponding ICMP message to the internal host. Is that acceptable? Best regards Michael > > You may consider my initial wording for IPv4 + add a new sentence to cover the IPv6 case. > > > > > _________________________________________________________________________________________________________________________ > > Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou privilegiees et ne doivent donc > pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu ce message par erreur, veuillez le signaler > a l'expediteur et le detruire ainsi que les pieces jointes. Les messages electroniques etant susceptibles d'alteration, > Orange decline toute responsabilite si ce message a ete altere, deforme ou falsifie. Merci. > > This message and its attachments may contain confidential or privileged information that may be protected by law; > they should not be distributed, used or copied without authorisation. > If you have received this email in error, please notify the sender and delete this message and its attachments. > As emails may be altered, Orange is not liable for messages that have been modified, changed or falsified. > Thank you. >
- [tsvwg] I-D Action: draft-ietf-tsvwg-natsupp-16.t… internet-drafts
- Re: [tsvwg] I-D Action: draft-ietf-tsvwg-natsupp-… Michael Tuexen
- Re: [tsvwg] I-D Action: draft-ietf-tsvwg-natsupp-… mohamed.boucadair
- Re: [tsvwg] I-D Action: draft-ietf-tsvwg-natsupp-… Michael Tuexen
- Re: [tsvwg] I-D Action: draft-ietf-tsvwg-natsupp-… mohamed.boucadair
- Re: [tsvwg] I-D Action: draft-ietf-tsvwg-natsupp-… Michael Tuexen
- Re: [tsvwg] I-D Action: draft-ietf-tsvwg-natsupp-… Michael Tuexen
- Re: [tsvwg] I-D Action: draft-ietf-tsvwg-natsupp-… mohamed.boucadair
- Re: [tsvwg] I-D Action: draft-ietf-tsvwg-natsupp-… Michael Tuexen
- Re: [tsvwg] I-D Action: draft-ietf-tsvwg-natsupp-… mohamed.boucadair
- Re: [tsvwg] I-D Action: draft-ietf-tsvwg-natsupp-… Gorry Fairhurst
- Re: [tsvwg] I-D Action: draft-ietf-tsvwg-natsupp-… Michael Tuexen
- Re: [tsvwg] I-D Action: draft-ietf-tsvwg-natsupp-… mohamed.boucadair
- Re: [tsvwg] I-D Action: draft-ietf-tsvwg-natsupp-… Michael Tuexen