Scenario: 1. REGISTER to --oubound URL successful, gets received/rport 2. Proxy IP address changes due to round-robin DNS 3. INVITE -> new transport so Via header uses local IP address 4. <- 407 (includes new received/rport) 5. INVITE -> does not update IP address/port: still uses local IP address in Via header; ignores received/rport from 407 6. CANCEL -> due to fix #1996 , uses original received/rport from REGISTER transport 7. INVITE and CANCEL Via mismatch. This is like the reverse of issue #1996 where the fix now causes Via mismatch in the transaction. Anthony _______________________________________________ Visit our blog: http://blog.pjsip.org pjsip mailing list pjsip@xxxxxxxxxxxxxxx http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org