unbound: EDNS buffer size defaults to 4096

If this is changed, a warning will be shown.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

diff --git a/src/initscripts/init.d/unbound b/src/initscripts/init.d/unbound
index 08f98059ee72c0beffe557b3dda5d052de4a64d7..880278150aed80fd557d32b3b1b944fbfc79e35c 100644 (file)
--- a/src/initscripts/init.d/unbound
+++ b/src/initscripts/init.d/unbound
@@ -18,6 +18,9 @@ USE_FORWARDERS=1
 # Cache any local zones for 60 seconds
 LOCAL_TTL=60
 
+# EDNS buffer size
+EDNS_DEFAULT_BUFFER_SIZE=4096
+
 # Load optional configuration
 [ -e "/etc/sysconfig/unbound" ] && . /etc/sysconfig/unbound
 
@@ -87,19 +90,20 @@ update_forwarders() {
                done
 
                # Determine EDNS buffer size
-               local current_edns_buffer_size=$(unbound-control get_option edns-buffer-size)
-
-               if [ -n "${current_edns_buffer_size}" ]; then
-                       local new_edns_buffer_size=${current_edns_buffer_size}
+               local new_edns_buffer_size=${EDNS_DEFAULT_BUFFER_SIZE}
 
-                       for ns in ${forwarders}; do
-                               local edns_buffer_size=$(ns_determine_edns_buffer_size ${ns})
-                               if [ -n "${edns_buffer_size}" ]; then
-                                       if [ ${edns_buffer_size} -lt ${current_edns_buffer_size} ]; then
-                                               new_edns_buffer_size=${edns_buffer_size}
-                                       fi
+               for ns in ${forwarders}; do
+                       local edns_buffer_size=$(ns_determine_edns_buffer_size ${ns})
+                       if [ -n "${edns_buffer_size}" ]; then
+                               if [ ${edns_buffer_size} -lt ${new_edns_buffer_size} ]; then
+                                       new_edns_buffer_size=${edns_buffer_size}
                                fi
-                       done
+                       fi
+               done
+
+               if [ ${new_edns_buffer_size} -lt ${EDNS_DEFAULT_BUFFER_SIZE} ]; then
+                       boot_mesg "EDNS buffer size reduced to ${new_edns_buffer_size}" ${WARNING}
+                       echo_warning
 
                        unbound-control -q set_option edns-buffer-size: ${new_edns_buffer_size}
                fi