[  456.578299] netdevsim netdevsim406 eni406np1: renamed from eth0
[  456.579187] netdevsim netdevsim614 eni614np1: renamed from eth0
[  456.665513] Could not find device with ifindex 2000 in netnsfd 11
[  456.665630] Could not find netns with fd: 2000
[  456.665675] Cannot link a netdevsim to itself
[  456.665725] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).