[  489.060288] netdevsim netdevsim640 eni640np1: renamed from eth1
[  489.156844] netdevsim netdevsim348 eni348np1: renamed from eth0
[  489.379022] Could not find device with ifindex 2000 in netnsfd 11
[  489.379234] Could not find netns with fd: 2000
[  489.379333] Cannot link a netdevsim to itself
[  489.379442] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).