[  523.956647] netdevsim netdevsim420 eni420np1: renamed from eth0
[  524.054786] netdevsim netdevsim518 eni518np1: renamed from eth1
[  524.318983] Could not find device with ifindex 2000 in netnsfd 11
[  524.319164] Could not find netns with fd: 2000
[  524.319265] Cannot link a netdevsim to itself
[  524.319380] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).