Hi Joel, This behavior is not unspecified. It is specified in Sec. 4 of the draft (as mentioned in my first email). Given the same packet and the same router configuration, the behavior should be the same with all implementations.
Thanks, Francois On 7 Sep 2023 at 16:32:06, Joel Halpern <j...@joelhalpern.com> wrote: > Why is it unspecified what the behavior is if the arg bits are non-zero. > Leaving things unspecified (and getting different behaviors from different > implementations) makes things more complex if we need to build on this > behavior. > > Yours, > > Joel > On 9/7/2023 10:30 AM, Francois Clad wrote: > > Hi Joel, > > Sec. 10.1 specifies how the SR source node should send the ICMP packet so > that it is correctly processed by the receiver. I.e., if the source sends > an ICMP packet to a SID with a non-zero argument, then they may not get a > reply back, as you have observed in your tests. > > Thanks, > Francois > > On 7 Sep 2023 at 14:49:20, Joel Halpern <j...@joelhalpern.com> wrote: > >> Can you explain then what the text is section 10.1 is talking about? It >> seems like it is mandating certain bits being 0 for it to be considered a >> match? (I will also have to find out more about why the tests showed >> certain routers dropping such packets.) >> >> Yours, >> >> Joel >> On 9/7/2023 4:09 AM, Francois Clad wrote: >> >> Hi Joel, >> >> The receiver in this case is an SR segment endpoint node processing an >> IPv6 packet that matches a FIB entry locally instantiated as a SID of this >> document. Therefore, the expected behavior of the receiver is that >> described in Sec. 4. >> >> Thanks, >> Francois >> >> On 6 Sep 2023 at 16:38:30, Joel Halpern <j...@joelhalpern.com> wrote: >> >>> Askign as a participant: >>> >>> In section 10.1 it says: >>> >>> When the SRv6 SID in the destination address of the ICMPv6 echo request >>> is one of the SID flavors defined in this document, the SR source node MUST >>> set the arguments of the SID to 0 >>> >>> What is a receiver required to do if it gets an improper ICMP, e.g. a >>> ping to aa compressed SID with non-zero argument? Reports from tests show >>> one implementation dropping the ping and another implementation responding >>> to it. >>> >>> Thank you, >>> >>> Joel >>> _______________________________________________ >>> spring mailing list >>> spring@ietf.org >>> https://www.ietf.org/mailman/listinfo/spring >>> >>
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