Debian apt update错误：‘Failed to fetch http://download.zerotier.com/debian/bullseye/pool/main/z/zerotier-one/zerotier-one_1.10.6_amd64.deb Connection failed’
apt install apt-transport-https ca-certificates curl gnupg lsb-release
curl -fsSL https://raw.githubusercontent.com/zerotier/ZeroTierOne/master/doc/contact%40zerotier.com.gpg | gpg --dearmor -o /etc/apt/trusted.gpg.d/zerotier.gpg
echo "deb https://download.zerotier.com/debian/$(lsb_release -cs)/ $(lsb_release -cs) main" | tee /etc/apt/sources.list.d/zerotier.list