diff --git a/lib/libcasper/services/cap_net/cap_net.h b/lib/libcasper/services/cap_net/cap_net.h
--- a/lib/libcasper/services/cap_net/cap_net.h
+++ b/lib/libcasper/services/cap_net/cap_net.h
@@ -93,6 +93,12 @@
     int af);
 struct hostent *cap_gethostbyaddr(cap_channel_t *chan, const void *addr,
     socklen_t len, int af);
+
+/* Structure packing functions. */
+nvlist_t *addrinfo_pack(const struct addrinfo *ai);
+struct addrinfo *addrinfo_unpack(const nvlist_t *nvl);
+void hostent_pack(const struct hostent *hp, nvlist_t *nvl, bool addtocache);
+struct hostent *hostent_unpack(const nvlist_t *nvl, struct hostent *hp);
 #else
 /* Capability functions. */
 #define cap_bind(chan, s, addr, addrlen)					\
diff --git a/lib/libcasper/services/cap_net/cap_net.c b/lib/libcasper/services/cap_net/cap_net.c
--- a/lib/libcasper/services/cap_net/cap_net.c
+++ b/lib/libcasper/services/cap_net/cap_net.c
@@ -91,7 +91,7 @@
 	}
 }
 
-static struct hostent *
+struct hostent *
 hostent_unpack(const nvlist_t *nvl, struct hostent *hp)
 {
 	unsigned int ii, nitems;
@@ -247,7 +247,7 @@
 	return (hp);
 }
 
-static struct addrinfo *
+struct addrinfo *
 addrinfo_unpack(const nvlist_t *nvl)
 {
 	struct addrinfo *ai;
@@ -744,7 +744,7 @@
 	return (false);
 }
 
-static void
+void
 hostent_pack(const struct hostent *hp, nvlist_t *nvl, bool addtocache)
 {
 	unsigned int ii;
@@ -938,7 +938,7 @@
 	return (error);
 }
 
-static nvlist_t *
+nvlist_t *
 addrinfo_pack(const struct addrinfo *ai)
 {
 	nvlist_t *nvl;