[  521.091333] netdevsim netdevsim535 eni535np1: renamed from eth1
[  521.188513] netdevsim netdevsim318 eni318np1: renamed from eth0
[  521.464069] Could not find device with ifindex 2000 in netnsfd 11
[  521.464305] Could not find netns with fd: 2000
[  521.464420] Cannot link a netdevsim to itself
[  521.464566] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).