[  499.082164] netdevsim netdevsim474 eni474np1: renamed from eth0
[  499.177074] netdevsim netdevsim750 eni750np1: renamed from eth1
[  499.429870] Could not find device with ifindex 2000 in netnsfd 11
[  499.430267] Could not find netns with fd: 2000
[  499.430407] Cannot link a netdevsim to itself
[  499.430541] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).