[  522.856002] netdevsim netdevsim397 eni397np1: renamed from eth0
[  522.953259] netdevsim netdevsim606 eni606np1: renamed from eth1
[  523.164830] Could not find device with ifindex 2000 in netnsfd 11
[  523.164980] Could not find netns with fd: 2000
[  523.165053] Cannot link a netdevsim to itself
[  523.165151] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).