[ 1286.381380][T11133] netdevsim netdevsim418 eni418np1: renamed from eth0 [ 1286.386912][T11132] netdevsim netdevsim619 eni619np1: renamed from eth1 [ 1289.976810][T11125] Could not find device with ifindex 2000 in netnsfd 11 [ 1289.977631][T11125] Could not find netns with fd: 2000 [ 1289.978223][T11125] Cannot link a netdevsim to itself [ 1289.979228][T11125] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).