[ 1014.493766][T12722] netdevsim netdevsim294 eni294np1: renamed from eth0 [ 1014.578247][T12673] netdevsim netdevsim581 eni581np1: renamed from eth1 [ 1016.340425][T12717] Could not find device with ifindex 2000 in netnsfd 11 [ 1016.341593][T12717] Could not find netns with fd: 2000 [ 1016.342600][T12717] Cannot link a netdevsim to itself [ 1016.343732][T12717] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).