[  491.172854] netdevsim netdevsim688 eni688np1: renamed from eth1
[  491.266778] netdevsim netdevsim472 eni472np1: renamed from eth0
[  491.556979] Could not find device with ifindex 2000 in netnsfd 11
[  491.557396] Could not find netns with fd: 2000
[  491.557476] Cannot link a netdevsim to itself
[  491.557572] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).