[ 1227.743243][T11149] netdevsim netdevsim340 eni340np1: renamed from eth0 [ 1227.860454][T11147] netdevsim netdevsim512 eni512np1: renamed from eth1 [ 1231.236645][T11141] Could not find device with ifindex 2000 in netnsfd 11 [ 1231.237482][T11141] Could not find netns with fd: 2000 [ 1231.238106][T11141] Cannot link a netdevsim to itself [ 1231.238851][T11141] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).