[  522.203855] netdevsim netdevsim644 eni644np1: renamed from eth1
[  522.300598] netdevsim netdevsim385 eni385np1: renamed from eth0
[  522.554595] Could not find device with ifindex 2000 in netnsfd 11
[  522.554810] Could not find netns with fd: 2000
[  522.554923] Cannot link a netdevsim to itself
[  522.555046] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).