I dunno about automotive, but I'm with Roland on the requirement to keep the internal controls strictly isolated from the Internet in other platforms. Yes, there is remote condition monitoring going on, but NEVER directly from the Internet to the internal devices, other than through proxies.
Perhaps the culture will change in time, or perhaps this culture will get even more strict in this regard. My sense is, the latter is a much more likely trend. I used to use public IP addresses religiously, for the internal hosts, but have stopped doing so recently. It seems that a number of people were relieved by this change. (Who knew?) So from my perspective, easily recognizable "private" IP addresses are a really good feature. Bert -----Original Message----- From: ipv6-boun...@ietf.org [mailto:ipv6-boun...@ietf.org] On Behalf Of Joel M. Halpern Sent: Wednesday, September 28, 2011 4:10 PM To: Roland Bless Cc: 6man Subject: Re: Centrally assigned "ULAs" for automotives and other environments There seem to be a number of assumptions, some of which I suspect I am misunderstanding, in the case being described. I tend to make two assumptions: 1) Even low end intra-automotive devices can cope with multiple addresses 2) Even low end automotive-internal devices will need to communicate externally. From what you have described, it seems that all such extenral communication (whether to another vehicle, to a trusted monitoring entity, or to the Internet, will have to go through what you describe as a "proxy" which will deal with changing the IPv6. Put differently, the only application communication will be via an ALG. Based on our experience, that seems to be a very bad design target. And it seems unnecessary for the goal of having stable itnernal addresses for internal communication. Yours, Joel M. Halpern -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
