[  487.725659] netdevsim netdevsim337 eni337np1: renamed from eth0
[  487.726430] netdevsim netdevsim530 eni530np1: renamed from eth1
[  487.799090] Could not find device with ifindex 2000 in netnsfd 11
[  487.799228] Could not find netns with fd: 2000
[  487.799329] Cannot link a netdevsim to itself
[  487.799442] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).