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Crit:Kern.Emergency> ons!!!!

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TitleCrit:Kern.Emergency> ons!!!!
Question
What does the below error message mean?
Crit:Kern.Emergency> ons!!!!

 
Environment
EXOS 15.7.3.1-patch1-3
MPLS
Answer
“Options!!!!” kernel message was truncated as ons!!!!  in log message.

The Options!!!! message can appear in following scenarios for MPLS tunneled packet:
  • If the size of a packet exceeds MTU, then the packet will be dropped in the switch and a message will be logged
  • If TTL expires for a packet which contains IP option
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