[  527.144777] netdevsim netdevsim320 eni320np1: renamed from eth0
[  527.241510] netdevsim netdevsim641 eni641np1: renamed from eth1
[  527.465606] Could not find device with ifindex 2000 in netnsfd 11
[  527.465848] Could not find netns with fd: 2000
[  527.466018] Cannot link a netdevsim to itself
[  527.466170] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).