[  488.973252] netdevsim netdevsim617 eni617np1: renamed from eth1
[  489.069764] netdevsim netdevsim401 eni401np1: renamed from eth0
[  489.316700] Could not find device with ifindex 2000 in netnsfd 11
[  489.316967] Could not find netns with fd: 2000
[  489.317071] Cannot link a netdevsim to itself
[  489.317188] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).