[  479.166357] netdevsim netdevsim527 eni527np1: renamed from eth1
[  479.167127] netdevsim netdevsim449 eni449np1: renamed from eth0
[  479.262701] Could not find device with ifindex 2000 in netnsfd 11
[  479.262788] Could not find netns with fd: 2000
[  479.262832] Cannot link a netdevsim to itself
[  479.262881] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).