[  484.626922] netdevsim netdevsim480 eni480np1: renamed from eth0
[  484.628215] netdevsim netdevsim660 eni660np1: renamed from eth0
[  484.712423] Could not find device with ifindex 2000 in netnsfd 11
[  484.712508] Could not find netns with fd: 2000
[  484.712558] Cannot link a netdevsim to itself
[  484.712610] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).