[  459.537535] netdevsim netdevsim509 eni509np1: renamed from eth0
[  459.538052] netdevsim netdevsim629 eni629np1: renamed from eth1
[  459.623625] Could not find device with ifindex 2000 in netnsfd 11
[  459.623738] Could not find netns with fd: 2000
[  459.623787] Cannot link a netdevsim to itself
[  459.623843] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).