This moved in recent glibc but was already OK in older ones.

--- ./print-sunrpc.c.bad	2011-10-26 17:38:39 +0200
+++ ./print-sunrpc.c	2011-10-26 17:39:40 +0200
@@ -31,7 +31,7 @@
 #include <tcpdump-stdinc.h>
 
 #ifdef HAVE_GETRPCBYNUMBER
-#include <rpc/rpc.h>
+#include <rpc/netdb.h>
 #ifdef HAVE_RPC_RPCENT_H
 #include <rpc/rpcent.h>
 #endif /* HAVE_RPC_RPCENT_H */