[  484.402744] netdevsim netdevsim721 eni721np1: renamed from eth1
[  484.502975] netdevsim netdevsim314 eni314np1: renamed from eth0
[  484.831527] Could not find device with ifindex 2000 in netnsfd 11
[  484.831714] Could not find netns with fd: 2000
[  484.831824] Cannot link a netdevsim to itself
[  484.831947] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).