In message <4e38c59d.8000...@jima.tk>, Jima writes: > On 2011-08-02 11:17, Owen DeLong wrote: > >> > >> en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 > >> ether 60:33:4b:01:75:85 > >> inet6 fe80::6233:4bff:fe01:7585%en1 prefixlen 64 scopeid 0x5 > >> inet 192.168.191.223 netmask 0xffffff00 broadcast 192.168.191.255 > >> inet6 fd92:7065:b8e::6233:4bff:fe01:7585 prefixlen 64 autoconf > >> inet6 2001:470:1f00:820:6233:4bff:fe01:7585 prefixlen 64 autoconf > >> media: autoselect > >> status: active > >> > >> Note the multiple prefixes. IPv6 is not just IPv4 with bigger addresses. > >> If you want to give your printers, etc. stable IPv6 addesses use ULAs. > >> > > > > Icky. > > > > > > Better yet, just subscribe to an ISP that will give you a static prefix. > > Well, judging by his prefixes, he does.
Indeed it is static but that doesn't change the argument that having a ULA works. The address selection algorithms choose the right source address for the correct destination address. The RA's for 2001:470:1f00:820::/64 could be withdrawn and the network would continue to work. Mark -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org
