Last Modified: Oct 05, 2026
Affected Product(s):
BIG-IP DNS
Known Affected Versions:
17.1.3.5, 17.5.1.9, 21.1.0.2
Opened: Sep 25, 2026 Severity: 3-Major
DNScache: tcp connect: errno 103 and DNScache: read (in tcp s): errno 103 messages may be logged repeatedly at error severity.
Excessive /var/log/ltm entries may generate unnecessary alerts, accelerate log rotation, and obscure other important messages.
BIG-IP DNS resolver cache communicates with upstream nameservers over TCP and encounters repeated TCP connection or read failures.
NA.
None