-----Original Message----- From: Christopher Morrow [mailto:christopher.mor...@gmail.com] Sent: Sunday, October 18, 2009 5:01 PM To: Hemant Singh (shemant) Cc: Brian Haberman; Margaret Wasserman; ipv6@ietf.org Subject: Re: Are IPv6 auto-configured addresses transient?
>I have a long lived ssh session between two devices, both of which use >enhanced privacy addresses that rotate hourly. If the addresses rotate at the hour, then a callback function from the interface can call the app and report the change. It's not even that an app has to track the interface IP address changes - the app just needs to register a callback to the interface ip address change processing function. Even in v4 IP addresses can change by the hour and many v4 apps have been developed sensibly. >(example provided) >Note that in most cases the ip address stays live on the device as >long as there's something actively using it... so its not really a >problem, unless the entire subnet changes (upstream provider change >for instance). >> anything related to lifetimes of addresses. On an IPv6 node, if >> anything related to the addresses on a network interface changes, the >> changes will affect the network interfaces the app is using. Even in >> IPv4, if an app is using an IP address of a network interface on the >> node, the app tracks changes of the IP address on the network interface >The app MAY track this info, it MAY also not :( sadly some people >hardcode the ip address into the application, of course you can't fix >that case. Agreed. Well, I state a simple coding mechanism above. The apps have to do better now. I think for such issues mentioned, some well-known proper coding practices exist. It up to BEHAVE to see what, if anything, needs specification here. I am still not convinced a problem exists here for which the IETF has to do anything about. I am definitely convinced on the referral IP address that Brian mentioned in that the referral needs some thought. Thanks, Hemant -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
