[  540.362009] netdevsim netdevsim509 eni509np1: renamed from eth0
[  540.363371] netdevsim netdevsim759 eni759np1: renamed from eth1
[  540.659282] Could not find device with ifindex 2000 in netnsfd 11
[  540.659407] Could not find netns with fd: 2000
[  540.659469] Cannot link a netdevsim to itself
[  540.659546] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).