Re: updates needed to print-udp.c.. (was Re: RFC 9868 on Transport Options for UDP)

[Francois via tcpdump-workers <tcpdump-workers () lists tcpdump org>]

> --- Begin Message ---
>
>
> From: Francois <devel.fx.lebail () orange fr>
>
> Date: Wed, 8 Oct 2025 19:33:59 +0200
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> On 08/10/2025 18:53, Guy Harris wrote:
> > On Oct 8, 2025, at 8:18 AM, Michael Richardson <mcr () sandelman ca> wrote:
> >
> > > rfc-editor () rfc-editor org wrote:
> > >
> > > > Transport protocols are extended through the use of transport header
> > > > options. This document updates RFC 768 (UDP) by indicating the
> > > > location, syntax, and semantics for UDP transport layer options
> > > > within the surplus area after the end of the UDP user data but before
> > > > the end of the IP datagram.
> >
> > OK, so does this finally make the Length field in the UDP header serve a useful purpose, or was there a purpose for 
> > it *before* this that I didn't know about?
>
> One example on network stacks: Linux, net/ipv4/udp.c and net/ipv6/udp.c: length checks.
>
> --- End Message ---
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