[  520.254909] netdevsim netdevsim389 eni389np1: renamed from eth0
[  520.350780] netdevsim netdevsim689 eni689np1: renamed from eth1
[  520.598364] Could not find device with ifindex 2000 in netnsfd 11
[  520.598572] Could not find netns with fd: 2000
[  520.598657] Cannot link a netdevsim to itself
[  520.598755] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).