networking – Add a route to my computer as gateway asks for ARP [INET]


I am trying to do extclient example of inet emulation section.

The readme says:

On your server, add a route to the host 10.1.1.1 and set the gateway to the
  IP address of the computer, on which the simulation is running.

where 10.1.1.1 is the host address inside the simulator.
So I added the route as:

route add 10.1.1.1 gw 192.168.1.6 enp0s25

where 192.168.1.6 is my local IP and enp0s25 is eth interface.

But if I try to ping 10.1.1.1 nothing works. Checking with wireshark I found that an ARP request (who is 10.1.1.1 tells 192.168.1.6) is raised? Why this? Where am I wrong?