[  519.560640] netdevsim netdevsim645 eni645np1: renamed from eth1
[  519.657572] netdevsim netdevsim487 eni487np1: renamed from eth0
[  519.867173] Could not find device with ifindex 2000 in netnsfd 11
[  519.867413] Could not find netns with fd: 2000
[  519.867536] Cannot link a netdevsim to itself
[  519.867684] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).