-libvirt-URL := http://libvirt.org/sources/libvirt-1.2.1.tar.gz
-libvirt-SHA1SUM := ea8e237e0df9f1828ff4a7a649c42aa45af7ecd7
-libvirt := $(notdir $(libvirt-URL))
+libvirt-URL1 := http://mirror.onelab.eu/third-party/libvirt-1.2.4.tar.gz
+libvirt-URL2 := http://planet-lab.org/third-party/libvirt-1.2.4.tar.gz
+libvirt-SHA1SUM := e2f963a21681fdcfd393a48d8160080d9da91bc8
+libvirt := $(notdir $(libvirt-URL1))