[ 1223.618005][T11146] netdevsim netdevsim416 eni416np1: renamed from eth0 [ 1223.717194][T11148] netdevsim netdevsim708 eni708np1: renamed from eth1 [ 1226.934558][T11138] Could not find device with ifindex 2000 in netnsfd 11 [ 1226.935435][T11138] Could not find netns with fd: 2000 [ 1226.935988][T11138] Cannot link a netdevsim to itself [ 1226.941939][T11138] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).