[  520.556101] netdevsim netdevsim396 eni396np1: renamed from eth0
[  520.653180] netdevsim netdevsim653 eni653np1: renamed from eth1
[  520.920865] Could not find device with ifindex 2000 in netnsfd 11
[  520.921054] Could not find netns with fd: 2000
[  520.921153] Cannot link a netdevsim to itself
[  520.921269] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).