[  456.522017] netdevsim netdevsim487 eni487np1: renamed from eth0
[  456.522542] netdevsim netdevsim578 eni578np1: renamed from eth1
[  456.625878] Could not find device with ifindex 2000 in netnsfd 11
[  456.626043] Could not find netns with fd: 2000
[  456.626145] Cannot link a netdevsim to itself
[  456.626257] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).