[  483.146469] netdevsim netdevsim669 eni669np1: renamed from eth1
[  483.246647] netdevsim netdevsim300 eni300np1: renamed from eth0
[  483.560965] Could not find device with ifindex 2000 in netnsfd 11
[  483.561128] Could not find netns with fd: 2000
[  483.561221] Cannot link a netdevsim to itself
[  483.561345] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).