I have two office, connected via two CCR (L2TP/IPSEC tunnel), and FreePBX in each office (192.168.1.10 and 192.168.2.10, connected via SIP trunk).
After upgrade to 6.36.2 i cannot call from one office to another.
In FreePBX log i see: VERBOSE[29520][C-000000b3] pbx.c: Executing [s@from-sip-external:6] Log(“SIP/192.168.1.10-000000f8”, "WARNING,“Rejecting unknown SIP connection from 192.168.1.10"”) in new stack
WARNING[29520][C-000000b3] Ext. s: “Rejecting unknown SIP connection from 192.168.1.10”
"Note that not all packets in a connection can be fasttracked, so it is likely to see some packets going through slow path even though connection is marked for fasttrack. This is the reason why fasttrack-connection is usually followed be identical action=accept rule. Fasttracked packets bypass firewall, connection tracking, simple queues, queue tree with parent=global, ip traffic-flow(restriction removed in 6.33), ip accounting, ipsec, hotspot universal client, vrf assignment, so it is up to administrator to make sure fasttrack does not interfere with other configuration; "