arp(8) and proxy only entries.

[Sean Boudreau <seanb%qnx.com@localhost>]

Hi:

arp(8) seems to have lost the ability to add / delete "proxy
only" entries (SIN_PROXY flag set).  FWICT, this was the
purpose of the "pro" keyword that sort of got merged in with
the "pub" keyword with PR 32681.

Here's a suggested diff.  Any comments before I commit?

-seanb

Index: arp.c
===================================================================
RCS file: /cvsroot/src/usr.sbin/arp/arp.c,v
retrieving revision 1.45
diff -u -r1.45 arp.c
--- arp.c       15 Dec 2007 19:44:54 -0000      1.45
+++ arp.c       9 Jan 2008 21:05:51 -0000
@@ -269,6 +269,10 @@
                else if (strncmp(argv[0], "pub", 3) == 0) {
                        flags |= RTF_ANNOUNCE;
                        doing_proxy = SIN_PROXY;
+                       if (argc && strncmp(argv[1], "pro", 3) == 0) {
+                               export_only = 1;
+                               argc--; argv++;
+                       }
                } else if (strncmp(argv[0], "trail", 5) == 0) {
                        warnx("%s: Sending trailers is no longer supported",
                            host);
@@ -363,10 +367,10 @@
        sina = &sin_m;
        rtm = &m_rtmsg.m_rtm;
 
-       if (info && strncmp(info, "pub", 3) == 0)
-               export_only = 1;
        getsocket();
        sin_m = blank_sin;              /* struct copy */
+       if (info && strncmp(info, "pro", 3) == 0)
+                sina->sin_other = SIN_PROXY;
        if (getinetaddr(host, &sina->sin_addr) == -1)
                return (1);
 tryagain:
@@ -569,9 +573,9 @@
        progname = getprogname();
        (void)fprintf(stderr, "Usage: %s [-n] hostname\n", progname);
        (void)fprintf(stderr, "       %s [-nv] -a\n", progname);
-       (void)fprintf(stderr, "       %s [-v] -d [-a|hostname [pub]]\n",
+       (void)fprintf(stderr, "       %s [-v] -d [-a|hostname [pub [pro]]]\n",
            progname);
-       (void)fprintf(stderr, "       %s -s hostname ether_addr [temp] [pub]\n",
+       (void)fprintf(stderr, "       %s -s hostname ether_addr [temp] [pub 
[pro]]\n",
            progname);
        (void)fprintf(stderr, "       %s -f filename\n", progname);
        exit(1);
Index: arp.8
===================================================================
RCS file: /cvsroot/src/usr.sbin/arp/arp.8,v
retrieving revision 1.19
diff -u -r1.19 arp.8
--- arp.8       31 Jan 2006 17:47:04 -0000      1.19
+++ arp.8       9 Jan 2008 21:05:51 -0000
@@ -45,11 +45,15 @@
 .Nm
 .Op Fl v
 .Fl d
-.Op Fl a | Ar hostname
+.Fl a
+.Nm
+.Op Fl v
+.Fl d Ar hostname
+.Op Ar pro
 .Nm
 .Fl s Ar hostname ether_addr
 .Op Ar temp
-.Op Ar pub
+.Op Ar pub Op Ar pro
 .Nm
 .Fl f Ar filename
 .Sh DESCRIPTION
@@ -78,9 +82,9 @@
 .Fl d
 flag. 
 If the
-.Cm pub
-keyword is specified, only the
-.Dq published
+.Cm pro
+keyword is specified, only the published
+.Dq proxy only
 .Tn ARP
 entry
 for this host will be deleted.
@@ -127,7 +131,11 @@
 server,
 responding to requests for
 .Ar hostname
-even though the host address is not its own.
+even though the host address is not its own.  If the word
+.Ar pro
+is also given, the published entry will be a
+.Dq proxy only
+entry.
 .It Fl v
 Display verbose information when adding or deleting
 .Tn ARP