[  521.629666] netdevsim netdevsim699 eni699np1: renamed from eth1
[  521.726598] netdevsim netdevsim384 eni384np1: renamed from eth0
[  521.967454] Could not find device with ifindex 2000 in netnsfd 11
[  521.967627] Could not find netns with fd: 2000
[  521.967714] Cannot link a netdevsim to itself
[  521.967814] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).