Bug ID 758311: Policy Compilation may cause MCPD to crash

Last Modified: May 29, 2024

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

Known Affected Versions:

Fixed In:

Opened: Feb 10, 2019

Severity: 3-Major


If a policy has rules involving IPv6 addresses, and the addresses differ only on 32-bit boundaries, then the compilation of that policy may cause MPCD to crash.


MCPD cores, and then restarts. The policy is not usable.


-- A policy is attached to a virtual server. -- That policy contains conditions that involve IPv6 addresses. -- The addresses in different rules differ only on 32-bit boundaries.


You can try either of the following: -- It may be possible to create multiple rules from a given rule by altering the netmask. -- Another possibility is to add a placeholder rule with no action that matches IP addresses differently.

Fix Information

Policies involving matching IP addresses now compile correctly.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips