Bug ID 458597: Fix zxfrd memory leak during zone transfers

Last Modified: Oct 06, 2020

Bug Tracker

Affected Product:  See more info
BIG-IP LTM(all modules)

Known Affected Versions:
10.2.4, 11.0.0, 11.1.0, 11.2.0, 11.2.1, 11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4

Fixed In:
11.6.0, 11.5.1 HF5, 11.4.1 HF6, 11.3.0 HF9, 11.2.1 HF11

Opened: Apr 23, 2014
Severity: 3-Major
Related AskF5 Article:


When transferring a zone from a name server to zxfrd, there is a small memory leak for each RR. The memory leak becomes significant and zxfrd may crash if the number of RRs in the zone is large and the zone transfer is frequent.


zxfrd may crash due to memory leak.


Transfer a zone to zxfrd


Reduce the frequency of zone transfer to zxfrd.

Fix Information

Now there is no memory leak when transfer a zone to zxfrd.

Behavior Change