[  481.340536] netdevsim netdevsim523 eni523np1: renamed from eth1
[  481.440918] netdevsim netdevsim463 eni463np1: renamed from eth0
[  481.828897] Could not find device with ifindex 2000 in netnsfd 11
[  481.829062] Could not find netns with fd: 2000
[  481.829168] Cannot link a netdevsim to itself
[  481.829286] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).