[ 1229.503304][T11139] netdevsim netdevsim591 eni591np1: renamed from eth1 [ 1229.538651][T11141] netdevsim netdevsim482 eni482np1: renamed from eth0 [ 1232.868201][T11133] Could not find device with ifindex 2000 in netnsfd 11 [ 1232.869372][T11133] Could not find netns with fd: 2000 [ 1232.870314][T11133] Cannot link a netdevsim to itself [ 1232.871795][T11133] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).