Output of 'ifconfig' command / 'netstat' command shows that RX drops counter on the interface grows rapidly under traffic load.
The issue occurs only when SecureXL is enabled.
Kernel debug shows the following drops:...dropped by do_inbound_finish, Reason: transmission failed
...dropped by do_inbound_finish, Reason: transmission failed
Following sk84300 (Latency after upgrade from NGX R65 to R75.x) does not resolve the issue.
The interfaces are busy and cannot accept packets coming from the SecureXL module.