+Package: *
+Pin: release a=bionic
+Pin-Priority: -100
+
+Package: *
+Pin: release a=bionic-updates
+Pin-Priority: -100
+
+Package: *
+Pin: release a=bionic-security
+Pin-Priority: -100
+
+Package: iproute2 cron thermald openssh-client openssh-server unattended-upgrades openssh-sftp-server
+Pin: release n=bionic
+Pin-Priority: 500