Fix dhclient infinite loop on ro /etc/resolv.conf

Submitted by:	C J Michaels <cjm2@earthling.net>
Reviewed by:	David W. Hankins
PR:		38778
ISC-Bug:	5754

1 files changed, 11 insertions, 5 deletions

diff --git a/contrib/isc-dhcp/client/scripts/freebsd b/contrib/isc-dhcp/client/scripts/freebsd
index f9d61b5..b79a440 100755
--- a/contrib/isc-dhcp/client/scripts/freebsd
+++ b/contrib/isc-dhcp/client/scripts/freebsd
@@ -13,13 +13,19 @@ fi
 make_resolv_conf() {
   if [ x"$new_domain_name_servers" != x ]; then
     if [ "x$new_domain_name" != x ]; then
-      echo search $new_domain_name >/etc/resolv.conf
+      ( echo search $new_domain_name >/etc/resolv.conf )
+      exit_status=$?
     else
-      rm /etc/resolv.conf
+      ( rm /etc/resolv.conf )
+      exit_status=$?
+    fi
+    if [ $exit_status -ne 0 ]; then
+      $LOGGER "WARNING: Unable to update resolv.conf: Error $exit_status"
+    else
+      for nameserver in $new_domain_name_servers; do
+       ( echo nameserver $nameserver >>/etc/resolv.conf )
+      done
     fi
-    for nameserver in $new_domain_name_servers; do
-      echo nameserver $nameserver >>/etc/resolv.conf
-    done
   fi
 }