type more /etc/apt/sources.list.d/frr.list and copy and paste to email. So we can see what the problem is. Tim On 07/02/2020 15:11, ian.2.oakley at bt.com wrote: > E: Malformed entry 1 in list file /etc/apt/sources.list.d/frr.list (Component) > E: The list of sources could not be read.