Bug ID 1601581: Virtual-address settings are not restored properly when overlapping NAT policy with proxy-arp is removed.

Last Modified: Sep 27, 2024

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

Known Affected Versions:
15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5, 15.1.5.1, 15.1.6, 15.1.6.1, 15.1.7, 15.1.8, 15.1.8.1, 15.1.8.2, 15.1.9, 15.1.9.1, 15.1.10, 15.1.10.2, 15.1.10.3, 15.1.10.4, 15.1.10.5, 16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 16.1.3.5, 16.1.4, 16.1.4.1, 16.1.4.2, 16.1.4.3, 16.1.5, 17.1.0, 17.1.0.1, 17.1.0.2, 17.1.0.3, 17.1.1, 17.1.1.1, 17.1.1.2, 17.1.1.3, 17.1.1.4

Opened: Jun 27, 2024

Severity: 4-Minor

Symptoms

Consider a case where there exists a nat policy with proxy-arp enabled overlapping with a virtual-address. If a nat policy proxy-arp option is removed some settings on a virtual-address might not take effect (arp disabled/icmp disabled).

Impact

Incorrect traffic handling.

Conditions

Example of affected configuration: security nat policy policy1 { rules { rule_001 { destination { addresses { 0.0.0.0/0 { } } proxy-arp enabled } ltm virtual-address 0.0.0.0 { address any arp disabled icmp-echo disabled mask any }

Workaround

After deleting proxy-arp option from nat policy, toggle one of settings of virtual-address.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips