[ 828.668375][T14763] netdevsim netdevsim362 eni362np1: renamed from eth0 [ 828.688977][T14765] netdevsim netdevsim524 eni524np1: renamed from eth1 [ 829.366109][T14751] Could not find device with ifindex 2000 in netnsfd 11 [ 829.366971][T14751] Could not find netns with fd: 2000 [ 829.367366][T14751] Cannot link a netdevsim to itself [ 829.367816][T14751] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).