[  489.826183] netdevsim netdevsim403 eni403np1: renamed from eth0
[  489.826583] netdevsim netdevsim600 eni600np1: renamed from eth1
[  489.923851] Could not find device with ifindex 2000 in netnsfd 11
[  489.923948] Could not find netns with fd: 2000
[  489.923998] Cannot link a netdevsim to itself
[  489.924050] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).