[ 1028.577678][T12627] netdevsim netdevsim343 eni343np1: renamed from eth0 [ 1028.680123][T12577] netdevsim netdevsim692 eni692np1: renamed from eth1 [ 1030.516950][T12622] Could not find device with ifindex 2000 in netnsfd 11 [ 1030.517909][T12622] Could not find netns with fd: 2000 [ 1030.518592][T12622] Cannot link a netdevsim to itself [ 1030.519403][T12622] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).