[  522.239602] netdevsim netdevsim686 eni686np1: renamed from eth1
[  522.337245] netdevsim netdevsim397 eni397np1: renamed from eth0
[  522.549208] Could not find device with ifindex 2000 in netnsfd 11
[  522.549366] Could not find netns with fd: 2000
[  522.549439] Cannot link a netdevsim to itself
[  522.549526] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).