BigIP F5 Coredumps 11.3 Issues

Hello Everyone:

I am new to BigIP F5 loadbalancer. I recently started experiencing core dumps only on standby unit which is version 11.3 hotfix 3. both active and standby are in sync.

This is what I see in logs

/var/log/tmm
<13> Dec  3 1:51:18 hostname notice hsb0: pde dma stopped
<13> Dec  3 1:51:18 hostname notice detach hsb_lbb0.

/var/log/daemon
Dec  3 1:51:42  hostname logger: Re-starting tmm
Dec  3 1:51:42  hostname logger: Re-starting tmm1
Dec  3 1:51:42  hostname logger: Re-starting tmm2
Dec  3 1:51:42  hostname logger: Re-starting tmm3

I searched and opened the case with f5 and per the following article/f5 the solution is to upgrade to atleast to Hotfix 5 because of the following.

SOL14398: TMM may core when processing connections for FastL4 virtual servers with a source address affinity persistence profile

http://support.f5.com/kb/en-us/solutions/public/14000/300/sol14398.html

This is interesting as it is only happening on standby unit while active F5 which is heavy on processing traffic has not had any issues.

Does any one know any quick fixes or actual reasons beside the one mentioned in SOL14398? Why is it only happening on standby when active is processing traffic normally without any core dumps?

I will open another thread on how to effectively apply Hotfix.

Thank you Kindly