deb https://mirrors.tuna.tsinghua.edu.cn/debian-security bookworm-security main contrib non-free non-free-firmware # deb-src https://mirrors.tuna.tsinghua.edu.cn/debian-security bookworm-security main contrib non-free non-free-firmware # deb https://security.debian.org/debian-security bookworm-...
我个人还是12比较喜欢实用清华大学Debian镜像源的,稳定性比较好。在这里,我也整理清华大学Debian10-12的镜像源,如果我们有需要更换的可以选择对应的版本。