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diff --git a/util.h b/util.h
index 9ec4817..474e11e 100644
--- a/util.h
+++ b/util.h
@@ -1,6 +1,28 @@
+/* Copyright (c) 2007-2009, UNINETT AS */
+/* See LICENSE for licensing information. */
+
 #include <sys/socket.h>
+#include <netdb.h>
+
+#define SOCKADDR_SIZE(addr) ((addr).ss_family == AF_INET ?	\
+			     sizeof(struct sockaddr_in) :	\
+			     sizeof(struct sockaddr_in6))
+
+#define SOCKADDRP_SIZE(addr) ((addr)->sa_family == AF_INET ?	\
+			      sizeof(struct sockaddr_in) :	\
+			      sizeof(struct sockaddr_in6))
+
+char *stringcopy(const char *s, int len);
+char *addr2string(struct sockaddr *addr);
+struct sockaddr *addr_copy(struct sockaddr *in);
+void port_set(struct sockaddr *sa, uint16_t port);
 
-char *stringcopy(char *s, int len);
-char *addr2string(struct sockaddr *addr, socklen_t len);
 void printfchars(char *prefixfmt, char *prefix, char *charfmt, char *chars, int len);
-int connectport(int type, char *host, char *port);
+void disable_DF_bit(int socket, struct addrinfo *res);
+int bindtoaddr(struct addrinfo *addrinfo, int family, int reuse, int v6only);
+int connecttcp(struct addrinfo *addrinfo, struct addrinfo *src, uint16_t timeout);
+
+
+/* Local Variables: */
+/* c-file-style: "stroustrup" */
+/* End: */