[  511.801011] netdevsim netdevsim291 eni291np1: renamed from eth0
[  511.898835] netdevsim netdevsim742 eni742np1: renamed from eth1
[  512.132326] Could not find device with ifindex 2000 in netnsfd 11
[  512.132514] Could not find netns with fd: 2000
[  512.132598] Cannot link a netdevsim to itself
[  512.132695] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).