[  524.961070] netdevsim netdevsim456 eni456np1: renamed from eth0
[  525.058659] netdevsim netdevsim573 eni573np1: renamed from eth1
[  525.314718] Could not find device with ifindex 2000 in netnsfd 11
[  525.314883] Could not find netns with fd: 2000
[  525.314958] Cannot link a netdevsim to itself
[  525.315078] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).