Operational Defect Database
BugZero found this defect 1752 days ago.
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F5 | 755976
ZebOS might miss kernel routes after mcpd deamon restart
Last update date:
5/17/2024
Affected products:
BIG-IP
BIG-IP TMOS
Affected releases:
11.6.1
11.6.2
11.6.3
11.6.3.1
11.6.3.2
11.6.3.3
11.6.3.4
11.6.4
11.6.5
11.6.5.1
11.6.5.2
11.6.5.3
Fixed releases:
17.0.0
16.1.2.2
15.1.5.1
14.1.4.6
13.1.5
Description:
After an mcpd daemon restart, sometimes (in ~30% of cases) ZebOS is missing some of kernel routes (virtual addresses). ... One of the most common scenario is a device reboot. ... Impact ... The kernel route (virtual address) is not added to the ZebOS routing table and cannot be advertised. ... Conditions ... -- Dynamic routing is configured. -- Virtual address is created and Route Advertisement is configured: imish -e 'sh ip route kernel' -- mcpd daemon is restarted or device is rebooted. ... Workaround ... There are several workarounds; here are two: -- Restart the tmrouted daemon: bigstart restart tmrouted -- Recreate the affected virtual address. ... Fix Information ... The kernel route is now present in the ZebOS routing table after mcpd daemon restart. ... Behavior Change
