/lib/libnss_dns.so.* but could also be e.g.
/lib/x86_64-linux-gnu/libnss_dns.so.*.
---- a/hooks/live
-+++ b/hooks/live
+Index: b/hooks/live
+===================================================================
+--- a/hooks/live 2011-07-24 22:08:17.000000000 +0200
++++ b/hooks/live 2011-07-24 22:08:18.000000000 +0200
@@ -260,7 +260,16 @@
# DNS for initramfs