[ 1228.248435][T11146] netdevsim netdevsim525 eni525np1: renamed from eth1 [ 1228.331056][T11148] netdevsim netdevsim281 eni281np1: renamed from eth0 [ 1231.593304][T11140] Could not find device with ifindex 2000 in netnsfd 11 [ 1231.594069][T11140] Could not find netns with fd: 2000 [ 1231.594875][T11140] Cannot link a netdevsim to itself [ 1231.595564][T11140] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).