Earlyshellcmd

[rdb]

I need help figuring out why the following earlyshellcmd is not working:

<earlyshellcmd>sysctl net.inet.ip.fw.dyn_buckets=512</earlyshellcmd>

It is located under pfsense\system:

<pfsense><version>2.3</version>
<lastchange><theme>metallic</theme>
<system><earlyshellcmd>sysctl net.inet.ip.fw.dyn_buckets=512</earlyshellcmd>

Any ideas?  Do I need to handle the "=" for xml?</system></lastchange></pfsense>