[  496.642336] netdevsim netdevsim596 eni596np1: renamed from eth1
[  496.737498] netdevsim netdevsim491 eni491np1: renamed from eth0
[  496.997989] Could not find device with ifindex 2000 in netnsfd 11
[  496.998326] Could not find netns with fd: 2000
[  496.998422] Cannot link a netdevsim to itself
[  496.998532] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).