[ 1011.248387][T12631] netdevsim netdevsim751 eni751np1: renamed from eth1 [ 1011.350763][T12580] netdevsim netdevsim446 eni446np1: renamed from eth0 [ 1013.264209][T12625] Could not find device with ifindex 2000 in netnsfd 11 [ 1013.265211][T12625] Could not find netns with fd: 2000 [ 1013.265987][T12625] Cannot link a netdevsim to itself [ 1013.266882][T12625] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).