[  511.926937] netdevsim netdevsim270 eni270np1: renamed from eth0
[  512.024864] netdevsim netdevsim754 eni754np1: renamed from eth1
[  512.242562] Could not find device with ifindex 2000 in netnsfd 11
[  512.242706] Could not find netns with fd: 2000
[  512.242790] Cannot link a netdevsim to itself
[  512.242878] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).