[  496.134270] netdevsim netdevsim721 eni721np1: renamed from eth1
[  496.229965] netdevsim netdevsim418 eni418np1: renamed from eth0
[  496.509814] Could not find device with ifindex 2000 in netnsfd 11
[  496.510195] Could not find netns with fd: 2000
[  496.510297] Cannot link a netdevsim to itself
[  496.510449] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).