Last Modified: Jan 07, 2026
Affected Product(s):
F5OS F5OS-A, Install/Upgrade
Known Affected Versions:
F5OS-A 1.8.0, F5OS-A 1.8.1, F5OS-A 1.8.2, F5OS-A 1.8.3
Fixed In:
F5OS-A 1.5.3
Opened: Nov 19, 2024 Severity: 2-Critical
The snmpwalk command times out after an upgrade.
The snmpwalk command fails if the management IP is in 172.17.x.x network in 1.8.0
-- The management IP address is in the 172.17.x.x network -- The system is upgraded from 1.5.2
Remove the iptables entries with 172.x network as source from the file /etc/sysconfig/iptables and reboot the system Steps are as below Verify existing entries: # iptables-save | grep 172.17 -A POSTROUTING -s 172.17.0.0/16 ! -o br-97c791a9e730 -j MASQUERADE -A POSTROUTING -s 172.17.0.0/16 ! -o br-e4f09d90e378 -j MASQUERADE Make a backup of the iptables file # cp /etc/sysconfig/iptables /etc/sysconfig/iptables.bak Edit the entries in the iptables file # iptables-save | grep -vF 172.17.0.0/16 > /etc/sysconfig/iptables Reboot the device: # reboot Verify entries. Either of these commands should return no results # iptables-save | grep -F 172.17.0.0/16 # grep -F '172.17.0.0' /etc/sysconfig/iptables
During the upgrade from 1.5.2 to any higher version, the iptables for default docker network (172 network) are removed