1. 1 OpenStack Summit Vancouver 201518 May 2015 IPv6 Fundamentals Jonne Soininen Nokia

2. 2 OpenStack Summit Vancouver 201518 May 2015 IPv4 Exhaustion IANA AfriNICAPNICARINLACNICRIPE OrganizationExhaustion DateAddresses remaining IANAFeb 3 rd 20110 AfriNICFeb 13 th 20192.6027 APNICApr 19 th 20110.7274 ARINJul 13 th 20150.1979 LACNICJun 10 th 20140.1780 RIPE NCCSep 14 th 20121.0142 http://www.potaroo.net/tools/ipv4/

3. 3 OpenStack Summit Vancouver 201518 May 2015 Differences between IPv4 and IPv6 IPv4 32 bits ~ 4 billion addresses Generally one address per interface Address configuration – Static – Dynamic Host Configuration Protocol (DHCP) Address conservation – Calculate addresses – Network Address Translation (NAT) IPv6 128 bits ~ 340 trillion, trillion, trillion addresses Multiple addresses of different scope per interface Address configuration – Static – Stateless Address Autoconfiguration (SLAAC) – DHCPv6 and DHCP prefix delegation A lot of addresses – Calculate prefixes – Not NAT

4. 4 OpenStack Summit Vancouver 201518 May 2015 IPv6 Address management Three types of addresses – Link-local, unique local addresses (ULA), globally unique Allocating addresses to end- sites – /64 or bigger – preferably bigger – RIRs advice /56 Address configuration options – Static – SLAAC – DHCPv6 and DHCPv6 PD Different ways to configure other parameters (e.g. DNS) Hos t Network Router Router Solicitation Router Advertisement Duplicate Address Detection

5. 5 OpenStack Summit Vancouver 201518 May 2015 Summary IPv6 is different from IPv4 Hosts have multiple addresses There is adequate address space DHCP is not the main method of address allocation

6. 6 OpenStack Summit Vancouver 201518 May 2015 IPv6 is the new black! Thank you