[  487.358472] netdevsim netdevsim397 eni397np1: renamed from eth0
[  487.460504] netdevsim netdevsim731 eni731np1: renamed from eth1
[  487.806325] Could not find device with ifindex 2000 in netnsfd 11
[  487.806480] Could not find netns with fd: 2000
[  487.806562] Cannot link a netdevsim to itself
[  487.806658] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).