Bug ID 2008409: MAC masquerade does not work on an F5OS tenant if there are no floating self-ips configured on the VLAN

Last Modified: Aug 05, 2025

Affected Product(s):
BIG-IP TMOS(all modules)

Known Affected Versions:
17.1.2.2

Opened: Aug 01, 2025

Severity: 4-Minor

Symptoms

Network traffic fails on a VLAN that is shared by multiple tenants.

Impact

MAC masquerade may not work properly causing traffic failures such as packets not arriving on the tenant. Or excessive DLFs on the network.

Conditions

-- F5OS tenants sharing a VLAN -- MAC masquerade enabled on both tenants -- No floating self-ips configured

Workaround

Add floating self-ips to all traffic VLANs that are using MAC masquerade.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips