Last Modified: Jul 12, 2023
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
11.2.0, 11.2.1, 11.3.0
Opened: Oct 23, 2013 Severity: 3-Major Related Article:
K15826
TMM might crash if an ICMP packet refers to a closed UDP connection.
Traffic disrupted while tmm restarts.
- A virtual server with UDP profile. This is more likely to occur if the UDP profile 'Datagram LB' option is enabled and/or if the UDP profile timeout is 0 or 'immediate'. - An ICMP packet (such as destination-unreachable) arrives matching the IP and port tuple of an old UDP connection just after a new UDP packet arrives from a client with the same tuple for a new connection.
If the UDP profile timeout is set to 0 or 'immediate', consider increasing this value.
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