[  474.604894] netdevsim netdevsim400 eni400np1: renamed from eth0
[  474.605538] netdevsim netdevsim572 eni572np1: renamed from eth0
[  474.695247] Could not find device with ifindex 2000 in netnsfd 11
[  474.695327] Could not find netns with fd: 2000
[  474.695368] Cannot link a netdevsim to itself
[  474.695418] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).