[ 529.715911] netdevsim netdevsim672 eni672np1: renamed from eth1 [ 529.812204] netdevsim netdevsim494 eni494np1: renamed from eth0 [ 530.054748] Could not find device with ifindex 2000 in netnsfd 11 [ 530.054944] Could not find netns with fd: 2000 [ 530.055033] Cannot link a netdevsim to itself [ 530.055152] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).