Bug ID 1314633

Bug ID 1314633: Tcpdump cannot be used with the --f5 option and a snaplen of zero

Last Modified: Oct 19, 2025

Affected Product(s):
BIG_IP_NEXT(VE/HW) LTM(all modules)

Fixed In:
20.0.1

Opened: Jun 28, 2023

Severity: 3-Major

Attempting to use tcpdump outputs the following error: "Invalid snaplen 0, f5 option requires snaplen 0".

Tcpdump cannot be used with the --f5 option and a snaplen of 0.

Running tcpdump with the --f5 option and either not specifying snaplen or using 0.

Tcpdump can be used with the --f5 option by specifying a snaplen of 65535.

Tcpdump can now be used with the --f5 option and either not specifying snaplen or using 0.