[  474.223682] netdevsim netdevsim620 eni620np1: renamed from eth1
[  474.224134] netdevsim netdevsim503 eni503np1: renamed from eth0
[  474.306205] Could not find device with ifindex 2000 in netnsfd 11
[  474.306287] Could not find netns with fd: 2000
[  474.306333] Cannot link a netdevsim to itself
[  474.306386] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).