[  522.508242] netdevsim netdevsim731 eni731np1: renamed from eth1
[  522.606007] netdevsim netdevsim478 eni478np1: renamed from eth0
[  522.845489] Could not find device with ifindex 2000 in netnsfd 11
[  522.845699] Could not find netns with fd: 2000
[  522.845814] Cannot link a netdevsim to itself
[  522.845934] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).