[ 1226.467443][T11140] netdevsim netdevsim528 eni528np1: renamed from eth1 [ 1226.478060][T11142] netdevsim netdevsim369 eni369np1: renamed from eth0 [ 1229.766341][T11134] Could not find device with ifindex 2000 in netnsfd 11 [ 1229.767410][T11134] Could not find netns with fd: 2000 [ 1229.768506][T11134] Cannot link a netdevsim to itself [ 1229.769630][T11134] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).