[  633.576955][ T9991] netdevsim netdevsim398 eni398np1: renamed from eth0
[  633.589963][ T9994] netdevsim netdevsim519 eni519np1: renamed from eth1
[  634.220750][ T9980] Could not find device with ifindex 2000 in netnsfd 11
[  634.221610][ T9980] Could not find netns with fd: 2000
[  634.221997][ T9980] Cannot link a netdevsim to itself
[  634.222469][ T9980] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).