On Mon, 2013-02-11 at 16:53 -0500, Gene Czarcinski wrote: > On 02/11/2013 04:35 PM, Dan Williams wrote: > > On Mon, 2013-02-11 at 16:29 -0500, Gene Czarcinski wrote: > >> On 02/11/2013 04:12 PM, Dan Williams wrote: > >>> See my reply to your other mail about this; I see what you're saying > >>> now, and I think we can push for having whatever generates machine-id > >>> (often systemd) pull that information from firmware/hardware rather than > >>> generating it randomly. > >> Success! Thank you. That does scratch my itch. > >> > >> So long as it does not vary, I can plug it into dnsmasq with fixed IPv6 > >> addresses and it will work. > > Well, it turns out that machine-id is confusingly named, and that it's > > actually the "install id" and is meant to change whenever the OS is > > reinstalled. So we're kinda stuck here; either we try to follow the > > standards to the end of the earth and start > > parsing /sys/class/dmi/id/product_id (which apparently is often > > 1234567890) or we just go off machine-id and understand that > > reinstalling the OS on the same hardware will change the DUID. > > > > My believe is that using DUID-UUID generated from /etc/machine-id is > > more standards-compliant and less error-prone than using DUID-LL or > > DUID-LLT though. And, of course, it can always be overridden. > Too bad. I thought this might be a solution. > > I really do not have multiple network interfaces on most systems and the > ones that do are manually configured. So, I will just pick one( duid-LL > or duid-UUID) and use it for every installation where I need to have a > specific IPv6 address.
A DUID-UUID on a system with one interface should provide exactly the same behavior as a DUID-LL on that system, no? And are the systems you run that have multiple interfaces that use DHCPv6 connected to the same broadcast domain (eg, would use the same DHCPv6 server)? Dan _______________________________________________ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
