[  515.827845] netdevsim netdevsim453 eni453np1: renamed from eth0
[  515.924964] netdevsim netdevsim666 eni666np1: renamed from eth1
[  516.149024] Could not find device with ifindex 2000 in netnsfd 11
[  516.149208] Could not find netns with fd: 2000
[  516.149285] Cannot link a netdevsim to itself
[  516.149391] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).