[ 1016.338131][T12130] netdevsim netdevsim754 eni754np1: renamed from eth1 [ 1016.442645][T12064] netdevsim netdevsim319 eni319np1: renamed from eth0 [ 1018.267989][T12453] Could not find device with ifindex 2000 in netnsfd 11 [ 1018.268998][T12453] Could not find netns with fd: 2000 [ 1018.269688][T12453] Cannot link a netdevsim to itself [ 1018.270461][T12453] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).