[ 1010.680689][T12117] netdevsim netdevsim736 eni736np1: renamed from eth1 [ 1010.686012][T12119] netdevsim netdevsim476 eni476np1: renamed from eth0 [ 1012.382563][T12547] Could not find device with ifindex 2000 in netnsfd 11 [ 1012.383523][T12547] Could not find netns with fd: 2000 [ 1012.390799][T12547] Cannot link a netdevsim to itself [ 1012.391615][T12547] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).