Last Modified: Aug 19, 2026
Affected Product(s):
BIG-IP All
Known Affected Versions:
11.5.3, 11.5.3 hf1, 11.5.3 hf2, 11.6.0, 11.6.0 hf1, 11.6.0 hf2, 11.6.0 hf3, 11.6.0 hf4, 11.6.0 hf5, 11.6.0 hf6, 11.6.0 hf7, 11.6.0 hf8, 12.0.0, 12.0.0 hf1, 12.0.0 hf2, 12.0.0 hf3, 12.0.0 hf4
Fixed In:
12.1.0, 11.6.1, 11.5.4
Opened: Jun 08, 2015 Severity: 2-Critical
Intermittent lost connections to virtual servers or pool nodes with no observable errors on external interfaces. Errors are observed on internal interfaces using 'tmos show net interface -hidden'
Lost connections
Normal operation. This can occur on BIG-IP 8950, 11000, and 11050 platforms.
None.
An issue with intermittent lost connections with no errors on the external interface has been corrected.