Limiting bandwidth on a VLAN does not work

Question

Hi, 
 I have created a Guest VLAN (Port1.2) with a DHCP (10.0.0.0/24) to isolate the visitors connected on Unify APs. Unify APs Guest SSID is pointing to this Guest VLAN. ipconfig from a guest computer gives me : 10.0.0.2. So everything works fine and I get internet access. 
 Now I want to limit the bandwidth for all users on this Guest VLAN. So I set up a traffic shaping policy (100Mbps is for test purpose :) ) : 
 
 Then I put new rule on the top of firewall rules: 
 
 WAN-ANY >> LAN-Port1.2 
 Traffic shaping policy : Limited Share Bandwidth 
 
 But download bandwidth is not limited on my guest computer and all traffic goes though default firewall rules (bottom one). 
 What am I doing wrong?

Speatech · Accepted Answer

I found the issue ( or should I call it a bug? )... 
 In my firewall rule, I was using as a source : LAN, Port1.2 
 I've replaced the Port1.2 by it associated network (10.0.0.0/24) and it works. 
 
 So why is Port1.2(VLAN) being seen as Port1(LAN)? Physically they are the same, but they are two distinct networks.