[  520.413092] netdevsim netdevsim349 eni349np1: renamed from eth0
[  520.510894] netdevsim netdevsim660 eni660np1: renamed from eth1
[  520.744497] Could not find device with ifindex 2000 in netnsfd 11
[  520.744679] Could not find netns with fd: 2000
[  520.744769] Cannot link a netdevsim to itself
[  520.744890] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).