Package: libc6 Version: 2.0.7.19981211-6 If I dpkg -i libc-2.0.7.19981211-6, my dns will be down immediately. Telnet to a host will return host look up failure. Downgrade back to the stable libc in hamm, or libc-2.0.7.19981211-5 will then fix this problem. Shao Zhang