[  520.595139] netdevsim netdevsim591 eni591np1: renamed from eth1
[  520.692861] netdevsim netdevsim304 eni304np1: renamed from eth0
[  520.930018] Could not find device with ifindex 2000 in netnsfd 11
[  520.930190] Could not find netns with fd: 2000
[  520.930271] Cannot link a netdevsim to itself
[  520.930399] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).