[  516.234598] netdevsim netdevsim412 eni412np1: renamed from eth0
[  516.332743] netdevsim netdevsim539 eni539np1: renamed from eth1
[  516.553946] Could not find device with ifindex 2000 in netnsfd 11
[  516.554150] Could not find netns with fd: 2000
[  516.554234] Cannot link a netdevsim to itself
[  516.554330] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).