[  483.658743] netdevsim netdevsim491 eni491np1: renamed from eth0
[  483.659203] netdevsim netdevsim603 eni603np1: renamed from eth1
[  483.744124] Could not find device with ifindex 2000 in netnsfd 11
[  483.744222] Could not find netns with fd: 2000
[  483.744264] Cannot link a netdevsim to itself
[  483.744328] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).