IPv6 MHMP 11 IPv6 MHMP (Multi-Homing with Multi-Prefixes) - Status Report - draft-troan-multihoming-without-nat66-01 presenting for design team Ole Trøan, IETF79 V6OPS WG November 2010

IPv6 MHMP 2 Internet IPv6 Corporate network Partner networks Multiple IPv6 prefixes Goal Give host multiple IPv6 prefixes –Belonging to different networks Host does “The Right Thing” 1.Source Address Selection 2.Next-Hop Route Selection 3.DNS Server Selection 4.(Identifying Supporting Hosts)

IPv6 MHMP 3 Our proposed items and their discussion results in Maastricht IPv6 Multiple NSP architecture draft-troan-ipv6-multihoming-without-ipv6nat-01 July 26, 2010 O. Troan, D.Wing Cisco Systems, D.Miles Alcatel-lucent, S.Matsushima SOFTBANK TELECOM, T. Okimoto NTT 1.Address selection policy distribution draft-ietf-6man-rfc3484-revise-01 Oct 15, 2010 Things To Be Considered for RFC 3484 Revision A. Matsumoto, J. Kato, T. Fujisaki NTT draft-fujisaki-6man-addr-select-opt-00 Jul 8, 2010 Distributing Address Selection Policy using DHCPv6 T. Fujisaki, A. Matsumoto NTT, R. Hiromi Intec Netcore 2.Route information distribution draft-dec-dhcpv6-route-option-05 Sep 28, 2010 DHCPv6 Route Option W. Dec, R. Johnson Cisco Systems, T. Mrugalski Gdansk Univ, A. Matsumoto NTT 3.DNS selection policy distribution draft-savolainen-mif-dns-server-selection-04 Sep 17, 2010 Improved DNS Server Selection for Multi-Homed Nodes T. Savolainen Nokia, J. Kato NTT continue discussion in v6ops WG continue discussion in v6ops WG continue discussion in 6man WG continue discussion in 6man WG adopted to WG item in 6man WG adopted to WG item in 6man WG adopted to chartered item in mif WG adopted to chartered item in mif WG technical individual solutions (1 to 3)

IPv6 MHMP 4 In Beijing 6man WG on Tuesday –Address selection policy distribution draft-fujisaki-6man-addr-select-opt-00 Jul 8, 2010 adopted to WG item (Thank you!) mif WG on Thursday –Route information distribution draft-dec-dhcpv6-route-option-05 Sep 28, 2010 –DNS selection policy distribution draft-savolainen-mif-dns-server-selection-04 Sep 17, 2010 New mif charter text including route and DNS issues was already approved. They will be adopted to WG item. Related works: draft-vandevelde-v6ops-pref-ps-00 draft-hain-ipv6-rpf-icmp-00 draft-wing-v6ops-happy-eyeballs-ipv6-01

IPv6 MHMP 55 Questions? IPv6 MHMP

66 Problem: Source Address Selection Multiple prefixes on one physical interface Wrong ISP Internet ISP-A ISP-B 2001:db8:1000:1:: :db8:8000:1:: :db8:8000::/ :db8:1000::/36 Dropped by ingress filter (RFC2827) Backup/Reminder Materials

IPv6 MHMP 77 Problem: Source Address Selection Multiple prefixes on one physical interface Disconnected network Internet ISP-A ASP-B 2001:db8:1000:1:: :db8:8000:1:: :db8:8000::/ :db8:1000::/ :db8:a000::1 Backup/Reminder Materials

IPv6 MHMP 88 Problem: Next-Hop Route Selection Internet IPv6 Corporate network Partner network Provide host with routing information of Partner network – so that Address Selection (RFC3484) can choose correct source address. RFC4191 does that (but there is a problem..) Backup/Reminder Materials

IPv6 MHMP 99 Problem: DNS Server Selection DNS Server Selection –Public DNS returns empty answer –Private DNS returns IP address Solution: host queries proper DNS server long-existing industry practice NSP (Interne t) Query: cnn.com Query: myasp.com Internet ASP / VPN (myasp.com) Backup/Reminder Materials

IPv6 MHMP 10 Problem: Identifying Supporting Hosts Supporting Host: –Chooses proper source address –Accepts next-hop route information –Supports DNS server selection Network would like to determine: –If ‘supporting host’, give it two prefixes –If ‘non-supporting host’, give it one prefix and NAT66 its traffic will be described in draft-troan-multihoming-without-nat66-01 Backup/Reminder Materials

IPv6 MHMP 11 Scope of Our Work Multiple physical interfaces Multiple prefixes Source Address Selection √ RFC3484 Revise standard Next-Hop Route √ (RFC4191) DNS Server Selection new standard Identify supporting hosts new standard Backup/Reminder Materials