[  523.406332] netdevsim netdevsim518 eni518np1: renamed from eth1
[  523.503416] netdevsim netdevsim380 eni380np1: renamed from eth0
[  523.744126] Could not find device with ifindex 2000 in netnsfd 11
[  523.744378] Could not find netns with fd: 2000
[  523.744490] Cannot link a netdevsim to itself
[  523.744623] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).