Tom, On 7/8/19 04:50, Tom Herbert wrote: > On Tue, Aug 6, 2019 at 6:17 PM Fernando Gont <fg...@si6networks.com> wrote: >> >> Hello, Alissa, >> >> Thanks for your comments! Inline... >> >> On 6/8/19 23:30, Alissa Cooper via Datatracker wrote: >>> >>> ---------------------------------------------------------------------- >>> DISCUSS: >>> ---------------------------------------------------------------------- >>> >>> Thanks for writing this document. >>> >>> Section 6.1 says: >>> >>> "Developers MAY develop new protocols or applications that rely on IP >>> fragmentation if the protocol or application is to be run only in >>> environments where IP fragmentation is known to be supported." >>> >>> I'm wondering if there should be a bit more nuance here to make the >>> recommendation clearer. Do we think there is a case where an application >>> protocol developed in the IETF will be known to only run in environments >>> where >>> fragmentation is supported? If we don't think developing such a protocol >>> would >>> be in scope for the IETF, then I'm wondering if that case should be called >>> out >>> explicitly with a stronger normative requirement. >> >> An application (developed in the IETF or elsewhere) might be used in >> some controlled domain, where fragmentation may be known to be >> supported. The message here is "unless you really know what you are >> doing and you're in e.g. a controlled environment where fragmentation is >> to be supported, you shouldn't rely on fragmentation". >> > Fernando, > > There were several examples given of protocols in use in controlled > environments that use fragmentation and justify that message. In > particular, it is used in some cases of network layer encapsulation. > For instance, consider that a packet entering an SRV6 domain may be > encapsulated with hundreds of bytes of overhead.
Isn't this the same thing I noted? i.e., you might have apps using fragmentation in controlled domains. OTOH, if you expect to use it on the public Internet, it is not reliable. -- Fernando Gont SI6 Networks e-mail: fg...@si6networks.com PGP Fingerprint: 6666 31C6 D484 63B2 8FB1 E3C4 AE25 0D55 1D4E 7492 _______________________________________________ Int-area mailing list Int-area@ietf.org https://www.ietf.org/mailman/listinfo/int-area
