[  487.077034] netdevsim netdevsim400 eni400np1: renamed from eth0
[  487.077299] netdevsim netdevsim681 eni681np1: renamed from eth1
[  487.181266] Could not find device with ifindex 2000 in netnsfd 11
[  487.181433] Could not find netns with fd: 2000
[  487.181558] Cannot link a netdevsim to itself
[  487.181708] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).