Model : TL-SG2424

Hardware Version : Various

Firmware Version : Various

ISP :

We have 8 TL-SG2424 switches installed, some version 1 and some version 2 hardware.

We recently had a rogue DHCP server on the network causing some issues and would like to enable DHCP filtering feature on all switches.

However, we have noticed that some of the switches are missing this feature (menu item doesn't exist under Switching). I can't find a version / firmware pattern where the feature is included / missing (some version 2 switches with the latest firmware are missing the feature, while some version 1 switches with outdated firmware have the feature). I am wondering if the feature is only enabled if some option / feature is enabled somewhere?

Screenshots:
1. DHCP Filtering is present:




2. DHCP Filtering is missing:





Feature is present for these versions:

Hardware Version: TL-SG2424 1.0
Firmware Version: 1.0.2 Build 20131212 Rel.43354

Hardware Version: TL-SG2424 1.0
Firmware Version: 1.0.6 Build 20141218 Rel.61735(s)

Hardware Version: TL-SG2424 1.0
Firmware Version: 1.0.2 Build 20131212 Rel.43354

Hardware Version: TL-SG2424 1.0
Firmware Version: 1.0.5 Build 20140825 Rel.43931(s)


Feature is missing for these versions:

Hardware Version: TL-SG2424 1.0
Firmware Version: 1.0.7 Build 20150713 Rel.53496(s)

Hardware Version: TL-SG2424 2.0
Firmware Version: 1.0.2 Build 20150714 Rel.61832(s)

Hardware Version: TL-SG2424 2.0
Firmware Version: 1.0.1 Build 20150602 Rel.38667(s)

Hardware Version: TL-SG2424 2.0
Firmware Version: 1.0.2 Build 20150714 Rel.61832(s)

I've checked under other menus, the feature is nowhere to be found on the switches that don't have it under Switching.


Any ideas?