IRTF MAPRG, IETF-126 (Vienna)

Note-takers: Mirja,

IRTF maprg agenda for IETF-126 (Vienna)

Date: Thursday, 23 July 2026, Session IV 16:30-18:30

Full client with Video:
https://meetecho.ietf.org/conference/?group=maprg&short=maprg&item=1

Room: Grand Klimt Hall 2

IRTF Note Well: https://irtf.org/policies/irtf-note-well-2019-11.pdf

Agenda

• Overview and Status - Mirja/Dave (5 min)

• Heads-up talk: Towards a Common Measurement Framework for
  Large-Scale libp2p Deployments using CBOR-based Verifiable Telemetry

  • Johanna Moran (remote) (5 mins)

• Heads-up talk: Measuring OAuth in MCP: Migration from DCR to CIMD -
  Paul Carleton (5 mins)

• Feeding the Crawlers: An Experiment in Deliberate Bot Attraction -
  Dan Silvers (remote) (10 mins)

Dave: How do you identify the bots -> AS number
Dave: Do they try to hide actively? -> mostly saw traffic from specific
IPs
Tim Chown: how to make your page still searchable?
Raghav: did you try different top level domains? -> not yet

• A Browser's Perspective: Surprises and Insights from Firefox
  Networking Telemetry - Oskar Mansfeld (10 mins)

Firefox has many e2e metrics publicly available

Mirja: Is ECN total? -> yes, about 20% or ECN traffic sees CE

Robert Kisteleki: Is IPv6 number of connection or valume? -> number of
connection but we can look at volume as well; also per country might be
interesting

• TTL Jumps: Unexpected TTL Rewrites Impacting Inferences from
  Traceroutes - Johannes Zirngibl (15 mins)

Lars Eggert: are these just bit flips? -> we also saw this outside of
trace route and multiplease bits would need to be flipped at once

Robert: we have data until 2010 -> online data is not complete? -> we
will check and yes network is growing

Ben Schwartz: Are there loop? Is looking at TTLs still valuable? ->
Don't think it's loop but TTL is still value; might only be a bug

• Measuring Deployment Characteristics of Post-Quantum TLS
  Authentication Mechanisms - Nalini Elkins (10 mins)

• Understanding DNS Dynamics over the Starlink Network - Robert
  Richter (10 mins)

Lorenzo: Did you also measure IPv6? -> we didn't; wouldn't assume a bit
difference and traceroute wouldn't work anymore this way -> okay you
could measure but you didn't

Ben: Is the DNS resolver co-located to the first ground hop? -> no
public information where resolvers are located; probably are co-located;
mostly used public resolvers? -> Ben: are public resolvers co-located
with peering points? Would be interested to learn more about space-x DNS
topology and behvaior

Lorenzo: we see anycast resolvers here

• The Future of DNS Privacy: A Comparison of DNS over QUIC and DNS
  over HTTP/3 - Newton Masinde (10 mins)

Lars: Nice methodology but you might a find a lot of small servers that
are rarly used; that's created a bias and that's why it doesn't match up
with our data; we can work on this and the Morzilla data

Lorenzo: I second that. might not be comparable to actually expierence.
Focus on servers that are intented for use. These DoQ servers might be
something different. E.g. we didn't implement DoH2. Look at high
performance resolvers and compare there.

Erik Nygen: Do you confirm these are first resolvers? because primary
use case for DoQ is authoritative servers.

• Detecting and Characterizing Exposed BGP Routers - Shyam Krishna
  Khadka (15 mins)

• Noisy Routers: Investigating the Make-Up of Route Collector Data -
  Ebrima Jaw (15 mins)

Thom Vauhgan quickly presented and Dave asked some questions