LTM not responding to iQuery

Hi All,

I currently have an existing solution which is like this:

GTM --> Layer 3 switch --> Trunk (vlans 1401 and 1402 allowed) --> LTM (self ips on vlan 1401 and 1402)

A simple diagram for this logically is like this:

    (vlan 1401)--->

Switch LTM (vlan 1402)--->

Now, the GTM needs to communicate with the self ip on vlan 1402, but to do that, it uses vlan 1401 as a transit to get there. when I did a tcp dump on the LTM for vlan 1401, I can see iQuery traffic coming from the GTM to the Self ip on vlan 1401, but when I do a tcpdump on vlan 1402, I can't see any iQuery traffic coming into the LTM. Seems to me like the LTM is dropping traffic when traffic comes from vlan selfip (1401) and going to another vlan self ip (1402).

Could someone help me understand why this is happening?

Thanks.