[  520.987208] netdevsim netdevsim511 eni511np1: renamed from eth0
[  521.082823] netdevsim netdevsim672 eni672np1: renamed from eth1
[  521.354402] Could not find device with ifindex 2000 in netnsfd 11
[  521.354614] Could not find netns with fd: 2000
[  521.354717] Cannot link a netdevsim to itself
[  521.354830] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).