[ 1293.428822][T11133] netdevsim netdevsim718 eni718np1: renamed from eth1 [ 1293.452100][T11135] netdevsim netdevsim397 eni397np1: renamed from eth0 [ 1297.138494][T11127] Could not find device with ifindex 2000 in netnsfd 11 [ 1297.139274][T11127] Could not find netns with fd: 2000 [ 1297.139937][T11127] Cannot link a netdevsim to itself [ 1297.140745][T11127] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).