[dhcp] dhclient-script: backport upstream changes

[Jiří Popelka]

commit 9b3b26027bc7bba43edd3195903d52e339e1b094
Author: Jiri Popelka <jpopelka at redhat.com>
Date:   Fri Jul 1 15:04:42 2011 +0200

    dhclient-script: backport upstream changes

 dhclient-script |   12 +++++++++++-
 1 files changed, 11 insertions(+), 1 deletions(-)
---
diff --git a/dhclient-script b/dhclient-script
index 4f9dff9..6a093e9 100644
--- a/dhclient-script
+++ b/dhclient-script
@@ -186,9 +186,19 @@ make_resolv_conf() {
             echo "options ${RES_OPTIONS}" >> ${rscf}
         fi
 
+        shopt -s nocasematch 
         for nameserver in ${new_dhcp6_name_servers} ; do
-            echo "nameserver ${nameserver}" >> ${rscf}
+            # If the nameserver has a link-local address
+            # add a <zone_id> (interface name) to it.
+            if  [[ "$nameserver" =~ ^fe80:: ]]
+            then
+                zone_id="%${interface}"
+            else
+                zone_id=
+            fi
+            echo "nameserver ${nameserver}$zone_id" >> ${rscf}
         done
+        shopt -u nocasematch 
 
         change_resolv_conf ${rscf}
         rm -f ${rscf}