[  526.330128] netdevsim netdevsim447 eni447np1: renamed from eth0
[  526.425755] netdevsim netdevsim647 eni647np1: renamed from eth1
[  526.672786] Could not find device with ifindex 2000 in netnsfd 11
[  526.673017] Could not find netns with fd: 2000
[  526.673126] Cannot link a netdevsim to itself
[  526.673257] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).