[  521.245357] netdevsim netdevsim447 eni447np1: renamed from eth0
[  521.341608] netdevsim netdevsim557 eni557np1: renamed from eth1
[  521.598979] Could not find device with ifindex 2000 in netnsfd 11
[  521.599194] Could not find netns with fd: 2000
[  521.599301] Cannot link a netdevsim to itself
[  521.599402] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).