[  522.274081] netdevsim netdevsim391 eni391np1: renamed from eth0
[  522.371743] netdevsim netdevsim647 eni647np1: renamed from eth1
[  522.602226] Could not find device with ifindex 2000 in netnsfd 11
[  522.602450] Could not find netns with fd: 2000
[  522.602544] Cannot link a netdevsim to itself
[  522.602656] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).