[  520.966512] netdevsim netdevsim439 eni439np1: renamed from eth0
[  521.064010] netdevsim netdevsim737 eni737np1: renamed from eth1
[  521.287533] Could not find device with ifindex 2000 in netnsfd 11
[  521.287703] Could not find netns with fd: 2000
[  521.287777] Cannot link a netdevsim to itself
[  521.287868] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).