[  484.454745] netdevsim netdevsim457 eni457np1: renamed from eth0
[  484.556487] netdevsim netdevsim535 eni535np1: renamed from eth1
[  484.905253] Could not find device with ifindex 2000 in netnsfd 11
[  484.905407] Could not find netns with fd: 2000
[  484.905486] Cannot link a netdevsim to itself
[  484.905577] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).