[  486.761965] netdevsim netdevsim640 eni640np1: renamed from eth1
[  486.858991] netdevsim netdevsim453 eni453np1: renamed from eth0
[  487.090242] Could not find device with ifindex 2000 in netnsfd 11
[  487.090546] Could not find netns with fd: 2000
[  487.090641] Cannot link a netdevsim to itself
[  487.090743] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).