[  509.617888] netdevsim netdevsim642 eni642np1: renamed from eth1
[  509.716324] netdevsim netdevsim320 eni320np1: renamed from eth0
[  509.907249] Could not find device with ifindex 2000 in netnsfd 11
[  509.907449] Could not find netns with fd: 2000
[  509.907549] Cannot link a netdevsim to itself
[  509.907683] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).