[  523.453168] netdevsim netdevsim728 eni728np1: renamed from eth1
[  523.550758] netdevsim netdevsim262 eni262np1: renamed from eth0
[  523.792600] Could not find device with ifindex 2000 in netnsfd 11
[  523.792781] Could not find netns with fd: 2000
[  523.792860] Cannot link a netdevsim to itself
[  523.792992] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).