[  484.551985] netdevsim netdevsim423 eni423np1: renamed from eth0
[  484.652589] netdevsim netdevsim760 eni760np1: renamed from eth1
[  484.988912] Could not find device with ifindex 2000 in netnsfd 11
[  484.989088] Could not find netns with fd: 2000
[  484.989184] Cannot link a netdevsim to itself
[  484.989311] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).