Hi, unless I'm using an outdated cache here is what I got on debian buster tonight: root@rs1:~# apt-cache policy frr frr: Installed: (none) Candidate: 8.0.1-0~deb11u1 Version table: 8.0.1-0~deb11u1 500 500 https://deb.frrouting.org/frr bullseye/frr-stable amd64 Packages 7.5.1-1.1 500 500 http://deb.debian.org/debian bullseye/main amd64 Packages root@rs1:~# apt-cache policy frr-pythontools frr-pythontools: Installed: (none) Candidate: 8.1-0~deb11u1 Version table: 8.1-0~deb11u1 500 500 https://deb.frrouting.org/frr bullseye/frr-stable amd64 Packages 7.5.1-1.1 500 500 http://deb.debian.org/debian bullseye/main amd64 Packages And you try to install frr and frr-pythontools The following packages have unmet dependencies: frr-pythontools : Depends: frr (>= 8.1-0~deb11u1~) but 8.0.1-0~deb11u1 is to be installed E: Unable to correct problems, you have held broken packages. -- Willy Manga @ongolaboy https://ongola.blogspot.com/