[  521.172421] netdevsim netdevsim452 eni452np1: renamed from eth0
[  521.269837] netdevsim netdevsim711 eni711np1: renamed from eth1
[  521.485612] Could not find device with ifindex 2000 in netnsfd 11
[  521.485854] Could not find netns with fd: 2000
[  521.485966] Cannot link a netdevsim to itself
[  521.486100] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).