nano /etc/apt/sources.list
#Fastly(IPv4&IPv6&CDN)
deb https://cdn-fastly.deb.debian.org/debian/ bullseye main contrib non-free
deb-src https://cdn-fastly.deb.debian.org/debian/ bullseye main contrib non-free
deb https://cdn-fastly.deb.debian.org/debian/ bullseye-updates main contrib non-free
deb-src https://cdn-fastly.deb.debian.org/debian/ bullseye-updates main contrib non-free
deb https://cdn-fastly.deb.debian.org/debian/ bullseye-backports main contrib non-free
deb-src https://cdn-fastly.deb.debian.org/debian/ bullseye-backports main contrib non-free
deb https://cdn-fastly.deb.debian.org/debian-security/ bullseye-security main contrib non-free
deb-src https://cdn-fastly.deb.debian.org/debian-security/ bullseye-security main contrib non-free
#Amazon CloudFront(IPv4&IPv6&CDN)
deb https://cdn-aws.deb.debian.org/debian/ bullseye main contrib non-free
deb-src https://cdn-aws.deb.debian.org/debian/ bullseye main contrib non-free
deb https://cdn-aws.deb.debian.org/debian/ bullseye-updates main contrib non-free
deb-src https://cdn-aws.deb.debian.org/debian/ bullseye-updates main contrib non-free
deb https://cdn-aws.deb.debian.org/debian/ bullseye-backports main contrib non-free
deb-src https://cdn-aws.deb.debian.org/debian/ bullseye-backports main contrib non-free
deb https://cdn-aws.deb.debian.org/debian-security/ bullseye-security main contrib non-free
deb-src https://cdn-aws.deb.debian.org/debian-security/ bullseye-security main contrib non-free
#Yandex(IPv4&IPv6)
deb https://mirror.yandex.ru/debian/ bullseye main contrib non-free
deb-src https://mirror.yandex.ru/debian/ bullseye main contrib non-free
deb https://mirror.yandex.ru/debian/ bullseye-updates main contrib non-free
deb-src https://mirror.yandex.ru/debian/ bullseye-updates main contrib non-free
deb https://mirror.yandex.ru/debian/ bullseye-backports main contrib non-free
deb-src https://mirror.yandex.ru/debian/ bullseye-backports main contrib non-free
deb https://mirror.yandex.ru/debian-security/ bullseye-security main contrib non-free
deb-src https://mirror.yandex.ru/debian-security/ bullseye-security main contrib non-free
#阿里云(IPv4&IPv6&CDN)
deb https://mirrors.aliyun.com/debian/ bullseye main contrib non-free
deb-src https://mirrors.aliyun.com/debian/ bullseye main contrib non-free
deb https://mirrors.aliyun.com/debian/ bullseye-updates main contrib non-free
deb-src https://mirrors.aliyun.com/debian/ bullseye-updates main contrib non-free
deb https://mirrors.aliyun.com/debian/ bullseye-backports main contrib non-free
deb-src https://mirrors.aliyun.com/debian/ bullseye-backports main contrib non-free
deb https://mirrors.aliyun.com/debian-security/ bullseye-security main contrib non-free
deb-src https://mirrors.aliyun.com/debian-security/ bullseye-security main contrib non-free
#腾讯云(IPv4&CDN)
deb https://mirrors.tencent.com/debian/ bullseye main contrib non-free
deb-src https://mirrors.tencent.com/debian/ bullseye main contrib non-free
deb https://mirrors.tencent.com/debian/ bullseye-updates main contrib non-free
deb-src https://mirrors.tencent.com/debian/ bullseye-updates main contrib non-free
deb https://mirrors.tencent.com/debian/ bullseye-backports main contrib non-free
deb-src https://mirrors.tencent.com/debian/ bullseye-backports main contrib non-free
deb https://mirrors.tencent.com/debian-security/ bullseye-security main contrib non-free
deb-src https://mirrors.tencent.com/debian-security/ bullseye-security main contrib non-free
#中国科学技术大学(IPv4&IPv6)
deb https://mirrors.ustc.edu.cn/debian/ bullseye main contrib non-free
deb-src https://mirrors.ustc.edu.cn/debian/ bullseye main contrib non-free
deb https://mirrors.ustc.edu.cn/debian/ bullseye-updates main contrib non-free
deb-src https://mirrors.ustc.edu.cn/debian/ bullseye-updates main contrib non-free
deb https://mirrors.ustc.edu.cn/debian/ bullseye-backports main contrib non-free
deb-src https://mirrors.ustc.edu.cn/debian/ bullseye-backports main contrib non-free
deb https://mirrors.ustc.edu.cn/debian-security/ bullseye-security main contrib non-free
deb-src https://mirrors.ustc.edu.cn/debian-security/ bullseye-security main contrib non-free
#清华大学(IPv4&IPv6)
deb https://mirror.tuna.tsinghua.edu.cn/debian/ bullseye main contrib non-free
deb-src https://mirror.tuna.tsinghua.edu.cn/debian/ bullseye main contrib non-free
deb https://mirror.tuna.tsinghua.edu.cn/debian/ bullseye-updates main contrib non-free
deb-src https://mirror.tuna.tsinghua.edu.cn/debian/ bullseye-updates main contrib non-free
deb https://mirror.tuna.tsinghua.edu.cn/debian/ bullseye-backports main contrib non-free
deb-src https://mirror.tuna.tsinghua.edu.cn/debian/ bullseye-backports main contrib non-free
deb https://mirror.tuna.tsinghua.edu.cn/debian-security/ bullseye-security main contrib non-free
deb-src https://mirror.tuna.tsinghua.edu.cn/debian-security/ bullseye-security main contrib non-free