In scenario 1, the server is technically a router between the 11 and the 10 subnet. There is a sysctl that enables forwarding (i'm on the phone and can't look it up right now). This must be enabled.
In your second scenario, the server appears to regard its subnet 11 address as just another address it has and replies.
Did not know that rectenna panels could harvest infrared radiation at night. Interesting technology
In scenario 1, the server is technically a router between the 11 and the 10 subnet. There is a sysctl that enables forwarding (i'm on the phone and can't look it up right now). This must be enabled.
In your second scenario, the server appears to regard its subnet 11 address as just another address it has and replies.