Hi, >>Some other comments on your draft: >>1) You show the Reason header being removed by the Proxy. While that may make sense for some cases, for being out on vacation it does not - I *want* the UAC to see it. > >I believe the header can reveal sensitive information for an attacker: >permanent blocking vs temporal blocking (and the expires). How does I know that there will be a proxy that supports the extension in the first place, and that would remove the header from the CAN/BYE/4xx? If no proxy supports the extension the Reason header may be passed all the way to the UAC... Regards, Christer _______________________________________________ Sipping mailing list https://www.ietf.org/mailman/listinfo/sipping This list is for NEW development of the application of SIP Use sip-implementors@xxxxxxxxxxxxxxx for questions on current sip Use sip@xxxxxxxx for new developments of core SIP