[ 1015.337264][T12128] netdevsim netdevsim656 eni656np1: renamed from eth1 [ 1015.340137][T12065] netdevsim netdevsim495 eni495np1: renamed from eth0 [ 1017.189639][T12453] Could not find device with ifindex 2000 in netnsfd 11 [ 1017.190655][T12453] Could not find netns with fd: 2000 [ 1017.191655][T12453] Cannot link a netdevsim to itself [ 1017.192661][T12453] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).