Re: dynamic or static IPv6 prefixes to residential customers

[Mark Andrews <marka () isc org>]

In message <4E38C59D.8000201 () 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could be withdrawn and the network would continue to work.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: marka () isc org