[  521.631873] netdevsim netdevsim603 eni603np1: renamed from eth1
[  521.729149] netdevsim netdevsim377 eni377np1: renamed from eth0
[  521.989101] Could not find device with ifindex 2000 in netnsfd 11
[  521.989315] Could not find netns with fd: 2000
[  521.989424] Cannot link a netdevsim to itself
[  521.989547] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).