[Edit] Know issue for QRadar 7.1 running on RedHat 6.2.
I am setting up a new server with two network interfaces.
These interfaces are on different subnets, and connected to the same firewall.
I'm trying to reach a remote IP.
It works fine from the first interface.
The second interface however, is making ARP requests instead of contacting the default gateway.
Using the same cable, and a laptop with the same IP setting as this second server interface, I can join the remote IP, so I would say it is not a connectivity/firewall issue.
I have tried several things without success so far