[  548.901427] netdevsim netdevsim451 eni451np1: renamed from eth0
[  548.999045] netdevsim netdevsim573 eni573np1: renamed from eth1
[  549.278000] Could not find device with ifindex 2000 in netnsfd 11
[  549.278173] Could not find netns with fd: 2000
[  549.278248] Cannot link a netdevsim to itself
[  549.278355] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).