Hi, Mark, On 04/11/2013 05:04 PM, Mark Smith wrote: >> A number of years ago this happened with Linux. IIRC, it was >> related to changing the default order of device driver loading, or >> changing from sequential loading of device drivers to parallel >> loading. That reordered the interface numbering and therefore the >> names, which people didn't like.
It's not surprising that people didn't like it :-) -- e.g., if you have per-interface fw rules, this breaks everything. > The solution at the time was to >> use the interface MAC address to assign interfaces persistent names >> by renaming the interfaces late in the initialisation stage. mm.. not sure hat you mean... >> One thing that may also influence this draft is that interfaces may >> be added to the system after it has booted. For example, I carry >> around a couple of USB/Ethernet adaptors that I'll add to my laptop >> if I need them for troubleshooting (and with my new laptop being >> wifi only, just to connect to a wired network), and I may not know >> if I'll need them when I boot my laptop. Well, if you add the card once the device has been bootstrapped, that shouldn't break the sequence of IID -- i.e., the USB/Ethernet adaptor would get an IfInndex that is larger than all existing IfIndexes... >> I also have a 3G mobile >> dongle that I occasionally use. I'm pretty sure Linux allocates >> ifindex values sequentially as the driver is loaded, so what >> ifindex values these dynamic interfaces gets is not going to be >> consistent and persistent. If you always connect these cards in the same sequence, why shouldn't them? P.S.: In any case, I've tweaked the I-D to essentially say that "the IfIndex might change if network interfaces are installed or removed". Thanks! Best regards, -- Fernando Gont SI6 Networks e-mail: fg...@si6networks.com PGP Fingerprint: 6666 31C6 D484 63B2 8FB1 E3C4 AE25 0D55 1D4E 7492 -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
