Detect SNMP MIB2 STREAMS on Solaris even if /dev/ip is not present.

libdnet-stripped/NMAP_MODIFICATIONS

@@ -2335,3 +2335,27 @@ index 315e7b0..6180d85 100644
  				    s[0], s[1], s[2], s[3], s[4], s[5], s[6], s[7],
  				    &idx, &bits, &scope, &flags, name);
  				if (strcmp(name, entry->intf_name) == 0) {
+
+o Detect SNMP MIB2 STREAMS on Solaris even if /dev/ip is not present, as it is
+  not in some Zones configurations. Using /dev/arp is proper in this case.
+
+diff --git a/libdnet-stripped/config/acinclude.m4 b/libdnet-stripped/config/acinclude.m4
+index 622c6a2..3145975 100644
+--- a/libdnet-stripped/config/acinclude.m4
++++ b/libdnet-stripped/config/acinclude.m4
+@@ -161,12 +161,12 @@ dnl results:    HAVE_STREAMS_MIB2
+ dnl
+ AC_DEFUN(AC_DNET_STREAMS_MIB2,
+     [AC_MSG_CHECKING(for SNMP MIB2 STREAMS)
+-    AC_CACHE_VAL(ac_cv_dnet_streams_mib2,
+-        if test -f /usr/include/inet/mib2.h -a -c /dev/ip ; then
++    AC_CACHE_VAL(ac_cv_dnet_streams_mib2,[
++        if test -f /usr/include/inet/mib2.h -a '(' -c /dev/ip -o -c /dev/arp ')' ; then
+             ac_cv_dnet_streams_mib2=yes
+         else
+             ac_cv_dnet_streams_mib2=no
+-        fi)
++        fi])
+     AC_MSG_RESULT($ac_cv_dnet_streams_mib2)
+     if test $ac_cv_dnet_streams_mib2 = yes ; then
+         AC_DEFINE(HAVE_STREAMS_MIB2, 1,

libdnet-stripped/config/acinclude.m4

@@ -161,12 +161,12 @@ dnl results:    HAVE_STREAMS_MIB2
 dnl
 AC_DEFUN(AC_DNET_STREAMS_MIB2,
     [AC_MSG_CHECKING(for SNMP MIB2 STREAMS)
-    AC_CACHE_VAL(ac_cv_dnet_streams_mib2,
+    AC_CACHE_VAL(ac_cv_dnet_streams_mib2,[
-        if test -f /usr/include/inet/mib2.h -a -c /dev/ip ; then
+        if test -f /usr/include/inet/mib2.h -a '(' -c /dev/ip -o -c /dev/arp ')' ; then
             ac_cv_dnet_streams_mib2=yes
         else
             ac_cv_dnet_streams_mib2=no
-        fi)
+        fi])
     AC_MSG_RESULT($ac_cv_dnet_streams_mib2)
     if test $ac_cv_dnet_streams_mib2 = yes ; then
         AC_DEFINE(HAVE_STREAMS_MIB2, 1,