I forgot to add these. Part of the patch from vodz
diff --git a/libbb/inet_common.c b/libbb/inet_common.c
new file mode 100644
index 0000000..0261d43
--- /dev/null
+++ b/libbb/inet_common.c
@@ -0,0 +1,174 @@
+/*
+ * stolen from net-tools-1.59 and stripped down for busybox by
+ * Erik Andersen <andersee@debian.org>
+ *
+ * Heavily modified by Manuel Novoa III Mar 12, 2001
+ *
+ * Version: $Id: inet_common.c,v 1.1 2001/11/10 12:18:42 andersen Exp $
+ *
+ */
+
+#include "inet_common.h"
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include "libbb.h"
+
+const char bb_INET_default[]="default";
+
+int INET_resolve(const char *name, struct sockaddr_in *s_in, int hostfirst)
+{
+ struct hostent *hp;
+ struct netent *np;
+
+ /* Grmpf. -FvK */
+ s_in->sin_family = AF_INET;
+ s_in->sin_port = 0;
+
+ /* Default is special, meaning 0.0.0.0. */
+ if (!strcmp(name, bb_INET_default)) {
+ s_in->sin_addr.s_addr = INADDR_ANY;
+ return (1);
+ }
+ /* Look to see if it's a dotted quad. */
+ if (inet_aton(name, &s_in->sin_addr)) {
+ return 0;
+ }
+ /* If we expect this to be a hostname, try hostname database first */
+#ifdef DEBUG
+ if (hostfirst) fprintf (stderr, "gethostbyname (%s)\n", name);
+#endif
+ if (hostfirst &&
+ (hp = gethostbyname(name)) != (struct hostent *) NULL) {
+ memcpy((char *) &s_in->sin_addr, (char *) hp->h_addr_list[0],
+ sizeof(struct in_addr));
+ return 0;
+ }
+ /* Try the NETWORKS database to see if this is a known network. */
+#ifdef DEBUG
+ fprintf (stderr, "getnetbyname (%s)\n", name);
+#endif
+ if ((np = getnetbyname(name)) != (struct netent *) NULL) {
+ s_in->sin_addr.s_addr = htonl(np->n_net);
+ return 1;
+ }
+ if (hostfirst) {
+ /* Don't try again */
+ errno = h_errno;
+ return -1;
+ }
+#ifdef DEBUG
+ res_init();
+ _res.options |= RES_DEBUG;
+#endif
+
+#ifdef DEBUG
+ fprintf (stderr, "gethostbyname (%s)\n", name);
+#endif
+ if ((hp = gethostbyname(name)) == (struct hostent *) NULL) {
+ errno = h_errno;
+ return -1;
+ }
+ memcpy((char *) &s_in->sin_addr, (char *) hp->h_addr_list[0],
+ sizeof(struct in_addr));
+
+ return 0;
+}
+
+/* cache */
+struct addr {
+ struct sockaddr_in addr;
+ char *name;
+ int host;
+ struct addr *next;
+};
+
+static struct addr *INET_nn = NULL; /* addr-to-name cache */
+
+/* numeric: & 0x8000: default instead of *,
+ * & 0x4000: host instead of net,
+ * & 0x0fff: don't resolve
+ */
+int INET_rresolve(char *name, size_t len, struct sockaddr_in *s_in,
+ int numeric, unsigned int netmask)
+{
+ struct hostent *ent;
+ struct netent *np;
+ struct addr *pn;
+ unsigned long ad, host_ad;
+ int host = 0;
+
+ /* Grmpf. -FvK */
+ if (s_in->sin_family != AF_INET) {
+#ifdef DEBUG
+ fprintf(stderr, _("rresolve: unsupport address family %d !\n"), s_in->sin_family);
+#endif
+ errno = EAFNOSUPPORT;
+ return (-1);
+ }
+ ad = (unsigned long) s_in->sin_addr.s_addr;
+#ifdef DEBUG
+ fprintf (stderr, "rresolve: %08lx, mask %08x, num %08x \n", ad, netmask, numeric);
+#endif
+ if (ad == INADDR_ANY) {
+ if ((numeric & 0x0FFF) == 0) {
+ if (numeric & 0x8000)
+ safe_strncpy(name, bb_INET_default, len);
+ else
+ safe_strncpy(name, "*", len);
+ return (0);
+ }
+ }
+ if (numeric & 0x0FFF) {
+ safe_strncpy(name, inet_ntoa(s_in->sin_addr), len);
+ return (0);
+ }
+
+ if ((ad & (~netmask)) != 0 || (numeric & 0x4000))
+ host = 1;
+#if 0
+ INET_nn = NULL;
+#endif
+ pn = INET_nn;
+ while (pn != NULL) {
+ if (pn->addr.sin_addr.s_addr == ad && pn->host == host) {
+ safe_strncpy(name, pn->name, len);
+#ifdef DEBUG
+ fprintf (stderr, "rresolve: found %s %08lx in cache\n", (host? "host": "net"), ad);
+#endif
+ return (0);
+ }
+ pn = pn->next;
+ }
+
+ host_ad = ntohl(ad);
+ np = NULL;
+ ent = NULL;
+ if (host) {
+#ifdef DEBUG
+ fprintf (stderr, "gethostbyaddr (%08lx)\n", ad);
+#endif
+ ent = gethostbyaddr((char *) &ad, 4, AF_INET);
+ if (ent != NULL)
+ safe_strncpy(name, ent->h_name, len);
+ } else {
+#ifdef DEBUG
+ fprintf (stderr, "getnetbyaddr (%08lx)\n", host_ad);
+#endif
+ np = getnetbyaddr(host_ad, AF_INET);
+ if (np != NULL)
+ safe_strncpy(name, np->n_name, len);
+ }
+ if ((ent == NULL) && (np == NULL))
+ safe_strncpy(name, inet_ntoa(s_in->sin_addr), len);
+ pn = (struct addr *) xmalloc(sizeof(struct addr));
+ pn->addr = *s_in;
+ pn->next = INET_nn;
+ pn->host = host;
+ pn->name = xstrdup(name);
+ INET_nn = pn;
+
+ return (0);
+}