[ 1232.412749][T11135] netdevsim netdevsim416 eni416np1: renamed from eth0 [ 1232.518168][T11136] netdevsim netdevsim513 eni513np1: renamed from eth1 [ 1235.725570][T11128] Could not find device with ifindex 2000 in netnsfd 11 [ 1235.726507][T11128] Could not find netns with fd: 2000 [ 1235.727065][T11128] Cannot link a netdevsim to itself [ 1235.727708][T11128] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).