On a ex4400 all the interfaces from FPC0 are continously flapping with pfex coredumps.

All the ports will flap, and there will be a pfex coredump each time.

user@device> show system core-dumps
fpc0:
--------------------------------------------------------------------------
/var/crash/*core*: No such file or directory
-rw-rw----  1 root  field   <size> <timestamp>  /var/tmp/pfex_junos.core.0.gz

Resolved on PR:

https://prsearch.juniper.net/problemreport/PR1596615

2023-05-10: validation and small changes
2023-05-10: Initial draft