[  484.595595] netdevsim netdevsim673 eni673np1: renamed from eth1
[  484.695914] netdevsim netdevsim431 eni431np1: renamed from eth0
[  485.052708] Could not find device with ifindex 2000 in netnsfd 11
[  485.052884] Could not find netns with fd: 2000
[  485.052979] Cannot link a netdevsim to itself
[  485.053100] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).