[  521.874672] netdevsim netdevsim599 eni599np1: renamed from eth1
[  521.973020] netdevsim netdevsim313 eni313np1: renamed from eth0
[  522.237051] Could not find device with ifindex 2000 in netnsfd 11
[  522.237266] Could not find netns with fd: 2000
[  522.237351] Cannot link a netdevsim to itself
[  522.237458] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).