[  523.566600] netdevsim netdevsim297 eni297np1: renamed from eth0
[  523.663705] netdevsim netdevsim570 eni570np1: renamed from eth1
[  523.879940] Could not find device with ifindex 2000 in netnsfd 11
[  523.880168] Could not find netns with fd: 2000
[  523.880260] Cannot link a netdevsim to itself
[  523.880364] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).