[  830.443295][T14606] netdevsim netdevsim299 eni299np1: renamed from eth0
[  830.457759][T14608] netdevsim netdevsim521 eni521np1: renamed from eth1
[  831.118328][T14594] Could not find device with ifindex 2000 in netnsfd 11
[  831.119334][T14594] Could not find netns with fd: 2000
[  831.119830][T14594] Cannot link a netdevsim to itself
[  831.120424][T14594] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).