How can I limit iSCSI to main interace

Running EE SCALE 24.10.1

After setting up an iSCSI share, I noticed it was listening on 2 addresses. My main ethernet adapter and also my Guest/IoT VLAN. I’d like to restrict it to just the main interface, but can’t see how.

Within the iSCSI Portals Edit page, it only allows the following:

image

Selecting 192.168.20.250 (20 being the Guest/IoT VLAN) “adds” the IP to the main IP, 192.168.0.250, which makes it listen on both addresses. Obviously selecting 0.0.0.0 or :: is also going to allow connections from the VLAN as well.

If I delete the IP Address box completely I get the following error:

image

So, is there a way to force only 192.168.0.250 to listen.