[  474.633794] netdevsim netdevsim647 eni647np1: renamed from eth1
[  474.634779] netdevsim netdevsim411 eni411np1: renamed from eth0
[  474.723020] Could not find device with ifindex 2000 in netnsfd 11
[  474.723124] Could not find netns with fd: 2000
[  474.723178] Cannot link a netdevsim to itself
[  474.723248] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).