On 2018-12-05 15:29, Nancy Cam-Winget wrote: <snip> > Section 3.1: Not sure this is correct: “[RFC7045] identifies > which of the currently assigned Internet Protocol numbers identify > IPv6 EHs vs. upper-layer protocols. ” > Reading RFC7045: it seems to be focused on how to process the extensions > appropriately not sure it really does the identification of protocol layering > or distinction? It set up the IANA registry that makes the distinction: https://www.iana.org/assignments/ipv6-parameters/ipv6-parameters.xhtml#extension-header There is no way except looking in that registry to distinguish an EH number from a protocol number. Brian
