[  475.635116] netdevsim netdevsim260 eni260np1: renamed from eth0
[  475.636123] netdevsim netdevsim514 eni514np1: renamed from eth0
[  475.731355] Could not find device with ifindex 2000 in netnsfd 11
[  475.731501] Could not find netns with fd: 2000
[  475.731603] Cannot link a netdevsim to itself
[  475.731731] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).