[  490.228272] netdevsim netdevsim750 eni750np1: renamed from eth1
[  490.325917] netdevsim netdevsim452 eni452np1: renamed from eth0
[  490.551189] Could not find device with ifindex 2000 in netnsfd 11
[  490.551373] Could not find netns with fd: 2000
[  490.551463] Cannot link a netdevsim to itself
[  490.551566] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).