Traffic terminated on AWS LTM

Hi ALL,

 

I've faced one weird circumstance and here is my brief topology.

 

Internet user >>> External-faced Virtual Server (bond with Elastic IP) >>> Internal-faced node

 

When I (from the Internet) tries to access the external-faced Virtual Server which with/without the source translation, I can't see any feedback from my Web server. LTM acts the gateway role for each VLAN/prefix.

 

Even though I've disabled the source/destination check for all the interfaces that F5 instance has, but the situation is still there.

 

The trace below captured from External interface on LTM

 

 

The trace below captured from Intenal interface in the meantime on LTM

 

 

Obviously, the traffic was terminated on the LTM itself (can see Sync from outside, but can't see LTM forward traffic to the corresponding node). Is anything I missed on either AWS side or LTM side at the moment?