[  489.286961] netdevsim netdevsim509 eni509np1: renamed from eth0
[  489.389335] netdevsim netdevsim641 eni641np1: renamed from eth1
[  489.771350] Could not find device with ifindex 2000 in netnsfd 11
[  489.771526] Could not find netns with fd: 2000
[  489.771609] Cannot link a netdevsim to itself
[  489.771718] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).