core-agent-linux/vm-systemd/qubes-yum-proxy.service

[Unit]
Description=Qubes yum proxy (tinyproxy)
ConditionPathExists=/var/run/qubes-service/qubes-yum-proxy
After=iptables.service

[Service]
ExecStartPre=/usr/bin/install -d --owner tinyproxy --group tinyproxy /var/run/tinyproxy
ExecStartPre=/sbin/iptables -I INPUT -i vif+ -p tcp --dport 8082 -j ACCEPT
ExecStartPre=/sbin/iptables -t nat -A PR-QBS-SERVICES -i vif+ -d 10.137.255.254 -p tcp --dport 8082 -j REDIRECT
ExecStart=/usr/sbin/tinyproxy -d -c /etc/tinyproxy/tinyproxy-qubes-yum.conf
ExecStopPost=/sbin/iptables -t nat -D PR-QBS-SERVICES -i vif+ -d 10.137.255.254 -p tcp --dport 8082 -j REDIRECT
ExecStopPost=/sbin/iptables -D INPUT -i vif+ -p tcp --dport 8082 -j ACCEPT

[Install]
WantedBy=multi-user.target