[  484.429791] netdevsim netdevsim499 eni499np1: renamed from eth0
[  484.530128] netdevsim netdevsim640 eni640np1: renamed from eth1
[  484.884500] Could not find device with ifindex 2000 in netnsfd 11
[  484.884689] Could not find netns with fd: 2000
[  484.884782] Cannot link a netdevsim to itself
[  484.884913] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).