[  521.844753] netdevsim netdevsim665 eni665np1: renamed from eth1
[  521.943001] netdevsim netdevsim446 eni446np1: renamed from eth0
[  522.164544] Could not find device with ifindex 2000 in netnsfd 11
[  522.164702] Could not find netns with fd: 2000
[  522.164777] Cannot link a netdevsim to itself
[  522.164865] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).