[  489.945778] netdevsim netdevsim509 eni509np1: renamed from eth0
[  490.041712] netdevsim netdevsim756 eni756np1: renamed from eth1
[  490.286752] Could not find device with ifindex 2000 in netnsfd 11
[  490.287142] Could not find netns with fd: 2000
[  490.287289] Cannot link a netdevsim to itself
[  490.287455] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).