[  488.420800] netdevsim netdevsim412 eni412np1: renamed from eth0
[  488.517652] netdevsim netdevsim726 eni726np1: renamed from eth1
[  488.746303] Could not find device with ifindex 2000 in netnsfd 11
[  488.746487] Could not find netns with fd: 2000
[  488.746570] Cannot link a netdevsim to itself
[  488.746671] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).