[  485.638392] netdevsim netdevsim407 eni407np1: renamed from eth0
[  485.639570] netdevsim netdevsim664 eni664np1: renamed from eth1
[  485.736126] Could not find device with ifindex 2000 in netnsfd 11
[  485.736228] Could not find netns with fd: 2000
[  485.736289] Cannot link a netdevsim to itself
[  485.736339] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).