Bind an address to your loopback (like its actually there!!!)

To set bind an addy to loopback (any incoming traffic destined for that ip address (in this case, 80.0.2.1) get pushed to lo:

ip addr add 80.0.2.¹⁄₃₂ broadcast + dev lo

Now when you ping for that host, your loopback will actually be the one responding. For work, I’m actually on a client machine that knows about a server (has it in its routing table) which needs to have this set up in order to respond.

Mario Loria is a builder of diverse infrastructure with modern workloads on both bare-metal and cloud platforms. He's traversed roles in system administration, network engineering, and DevOps. You can learn more about him here.