[  521.716683] netdevsim netdevsim712 eni712np1: renamed from eth1
[  521.814462] netdevsim netdevsim313 eni313np1: renamed from eth0
[  522.060341] Could not find device with ifindex 2000 in netnsfd 11
[  522.060557] Could not find netns with fd: 2000
[  522.060662] Cannot link a netdevsim to itself
[  522.060785] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).