Re: [spring] How CRH support SFC/Segment Endpoint option?

[Robert Raszuk <[e-mail]>]

Hi Ron,

So what in your opinion would happen with the below if there is no Routing
Header at all and I still modify DA at each segment endpoint ?

Can I still put two Destination options ?

Or reading the RFC8200 verbatim first DOH must be placed before RH hence to
have more then one DOH in a packet RH is mandatory ?

If so can it contain only 4 octets and no type specific data (so called be
a NULL RH) ?

What exactly tells the router to process or not to process last 4 headers ?
Is there a rule anywhere that unless RH is present and segments left = 0
destination must not follow next header in RH ?

Thank you,
R.


IPv6 extension header are ordered as follows:
>
> - Headers processed at every node along the delivery path
>         - Hop-by-hop
> - Headers processed at every segment endpoint
>         - Destination options
>         - Routing header
> - Headers processed at the ultimate destination only
>         - Fragment header
>         - Authentication header
>         - ESP header
>         - Destination Options header
>
> Note that the Destination Options header is the only extension header that
> can appear twice in a packet. The Destination Options header must
> immediately precede the Routing header or the upper-0layer header.
>