[  474.390101] netdevsim netdevsim757 eni757np1: renamed from eth1
[  474.390372] netdevsim netdevsim491 eni491np1: renamed from eth0
[  474.475794] Could not find device with ifindex 2000 in netnsfd 11
[  474.475903] Could not find netns with fd: 2000
[  474.475967] Cannot link a netdevsim to itself
[  474.476034] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).