[  483.320488] netdevsim netdevsim420 eni420np1: renamed from eth0
[  483.429862] netdevsim netdevsim669 eni669np1: renamed from eth1
[  484.315283] Could not find device with ifindex 2000 in netnsfd 11
[  484.315492] Could not find netns with fd: 2000
[  484.315612] Cannot link a netdevsim to itself
[  484.315845] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).