[  484.081468] netdevsim netdevsim497 eni497np1: renamed from eth0
[  484.182449] netdevsim netdevsim609 eni609np1: renamed from eth1
[  484.531842] Could not find device with ifindex 2000 in netnsfd 11
[  484.531994] Could not find netns with fd: 2000
[  484.532068] Cannot link a netdevsim to itself
[  484.532160] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).