Workaround link collapse bug
- Move lots of (effectively per packet) messages from ERROR/WARN to DEBUG to prevent spamming logs/stdout (and to prevent spending lots of time doing either)
- Instead log error messages every statsinterval if error conditions have been detected
- Be more aggressive in resetting the flow if conditions arise that are very broken
- Reset the missing queue when the flow gets reset.
Edited by Gijs Peskens