[  521.642778] netdevsim netdevsim342 eni342np1: renamed from eth0
[  521.740652] netdevsim netdevsim609 eni609np1: renamed from eth1
[  521.961177] Could not find device with ifindex 2000 in netnsfd 11
[  521.961357] Could not find netns with fd: 2000
[  521.961449] Cannot link a netdevsim to itself
[  521.961550] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).