Minutes IETF104: homenet

Meeting Minutes Home Networking (homenet) WG
Title Minutes IETF104: homenet
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Last updated 2019-03-27

Meeting Minutes

IETF 104 - Homenet Agenda
Prague, Czechia
Tuesday, March 26, 2019
9:00-11:00 Tuesday Morning session I
Grand Ballroom
Administrivia and Status Update: Chair slides (10 minutes)
Chairs: Stephen Farrell, Barbara Stark
 - Blue Sheets - circulating
 - Note takers - Evan Hunt, Brian Haberman
 - Jabber relay - Mikael Abrahamsson

 - Thank you, goodbye, hello and welcome (AD changes)
 - Status of drafts
Daniel Migault not present, so status moved till later.
Simple Naming (including any Hackathon readout), joining IoT
  edge routers to Homenets, and what are we actually producing anyway?
  and other drafts
  (Ted Lemon, 20 min)
Homenet Marketing document
  - market analysis comparing features among CPE products
  - Focused on multi-router home networks
  - Needs review and feedback
Homenet in OpenWRT
  - progress made on code, not much on the document
Simple Naming
  - Have home.arpa
  - No way to get info into authoritative server
  - discussion of missing/unspecified features in hncp (link naming...)
Robin Wilton: Regarding link naming: to what extent is this dependent on vendor
behavior? Ted: we need to specify the correct behavior Ted continues to present
  - per-link authority requires choosing dnssd proxy for each link, which would
  be done by HNCP; the HNCP extension is not done or specified - also requires
  auth server for home.arpa to delegate to each link; not solved for more than
  one router. - reverse mapping is not hard but not yet implemented; need to be
  able to advertise reverse name mapping registration protocol. This is not a
  high priority. - name resolution - local names done except for authority
  setup and delegation; global names done as well via discovery proxy - in
  stateful configurations, secondary routers need to be able to forward
  home.arpa queries to the authoritative router
Stephen Farrell: There will be difficulty with DoH.
Ted: Prefer using DoT with known external DNS servers.
  - dns push is required to get feature parity with mDNS. This is done.
Bernie Volz : how do security associations get established?
Ted: relying heavily on HNCP. TLS is hard.
Ted continues to present slides.
  - provisioning domains: not done, need the PvD RA option first
Juliusz Chroboczek: How will this work with multiple ISPs?
Ted: Ideally we use provisioning domains if available, but not yet widely
supported. So we round robin among source addresses until one works. Juliuz:
What about if two ISPs provide nonequivalent name servers? Ted: Host is
round-robining amongst different DNS servers. Only alternative is to use NAT
which would be a bad idea. Mikael Abrahamsson: This is not a solved problem.
Should we write a v6ops problem statement document? Ted: Reluctant to deal with
v6ops, perhaps a short-lived working group would be better. √Čric Vyncke: Ted:
Could support multihoming only if support for PvD, and be effectively
single-homed if not. Christian Franke: Round robin at the host performs badly
if there are resolvers that don't work. Ted continues to present slides.
 - Service Registration Protocol: Work still needs to be done.  SRP proxy is
 incomplete. might get support in BIND 9, could also be done in mDNSresponder -
 Homenet and IoT
    + two things necessary: isolation and routing
    + isolation: IoT devices must be reachable on wifi but not by all hosts.
    Need to be able to isolate nodes on the same SSID, is this possible?
Jacques Latour: Discusses secure iot gateway project based on MUD
Stuart Cheshire: asked for more info from Jacques who will provide a link
Ted continues to present slides.
 - routing: 6lo is working on a "routing" proposal to have a single backbone as
 a bridge for iot devices. Ted is skeptical about scalability. could HNCP be
 used to make it work better?
  - Next steps (Ted's view): Major vendors may not adopt but homenet can happen
  in openwrt. If it does, a lot of cheap and super-expensive routers could wind
  up supporting it. It could then spread. If it doesn't happen, homenet
  probably fizzles.
Juliusz: Problem isn't that it doesn't work in openwrt, but that it isn't
enabled by default. May be politically difficult to get it turned on by default
in openwrt but easy to fork openwrt and produce images. Mikael: more of a
custom profile than a "fork" Ted: Most things work, except for naming, so that
is current focus
Status of drafts from Daniel Migault:
    - two expired drafts: 1. how to outsource your desired public name to a DNS
    provider - this should be revived (front end naming architecture)  2. how
    to configure. Not so sure about whether 2 is needed now.
Where do we go from here? (Chairs, 30 min)

- Lack of feedback from mailing list on future of WG
- Open question as to whether a re-charter would help.
- Will a multi-router home network be more prevalent than a home network with a
single router and lots of IoT devices? - Is it a marketing/communication
problem? - lengthy discussion of use cases and problems that are not being well
communicated, e.g., lack of support for smooth handoff between broadcast
domains - should we re-charter? are we failing to discuss these things because
we believe they're out of scope? - What could be done that would get people
more active on the mailing list? - Hum on re-chartering - room prefers to
attempt re-chartering; needs to be confirmed on the mailing list. - Barbara
will post issues from current charter github site to list to try to get things
started. Meeting adjourned 10:48