R77.10 / R77.20 VSX Gateway intermittently stops passing traffic.
After enabling generation of core dump files per sk92764, core dump files for 'fwk' process were generated in the /var/log/dump/usermode/ directory.
Core dump file for 'fwk' process contains the following functions at the top of the stack:
(gdb) bt #0 fwchain_do_deliver_ex (chain=0x...) at fwchain.c #1 0x... in fwchain_do_deliver_ (chain=0x...) at fwchain.c ... ... ...
'fwk' process might crash under high traffic load.