Syslog messages "mac info allocation failed" & "mac cache add failed for key"

Frequent syslog messages observed on logs.

May 26 13:59:43 switch1 fpc0 mac info allocation failed

May 26 13:59:43 switch1 pfex: mac info allocation failed

May 22 14:45:02 switch1 fpc0 mac cache add failed for key (17, 00:09:0f:09:00:12)

May 22 14:45:02 switch1 pfex: mac cache add failed for key (17, 00:09:0f:09:00:12)

Check for mac move since those logs are usually related to mac move issues.

show ethernet-switching mac-learning-log 

If no mac move are found, a soft reboot will stop the log messages.

Those events were linked to PR1367141.

https://prsearch.juniper.net/problemreport/PR1367141