[  485.542446] netdevsim netdevsim524 eni524np1: renamed from eth1
[  485.642601] netdevsim netdevsim312 eni312np1: renamed from eth0
[  485.995776] Could not find device with ifindex 2000 in netnsfd 11
[  485.995923] Could not find netns with fd: 2000
[  485.996001] Cannot link a netdevsim to itself
[  485.996094] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).