[  520.984518] netdevsim netdevsim649 eni649np1: renamed from eth1
[  521.082196] netdevsim netdevsim282 eni282np1: renamed from eth0
[  521.333779] Could not find device with ifindex 2000 in netnsfd 11
[  521.333984] Could not find netns with fd: 2000
[  521.334079] Cannot link a netdevsim to itself
[  521.334184] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).