[ 1284.349609][T12981] netdevsim netdevsim421 eni421np1: renamed from eth0
[ 1284.399991][T12978] netdevsim netdevsim622 eni622np1: renamed from eth1
[ 1286.924827][T12969] Could not find device with ifindex 2000 in netnsfd 11
[ 1286.927240][T12969] Could not find netns with fd: 2000
[ 1286.928394][T12969] Cannot link a netdevsim to itself
[ 1286.929762][T12969] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).