[  539.907051] netdevsim netdevsim301 eni301np1: renamed from eth0
[  540.008803] netdevsim netdevsim613 eni613np1: renamed from eth1
[  540.394661] Could not find device with ifindex 2000 in netnsfd 11
[  540.394830] Could not find netns with fd: 2000
[  540.394921] Cannot link a netdevsim to itself
[  540.395034] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).