core74: Fix incrementation.

diff --git a/config/rootfiles/core/74/update.sh b/config/rootfiles/core/74/update.sh
index 3f8abce051141ca0529a4741e89258432fece007..ca26b514e94aeab6dd123897f92d0a3d7aa78877 100644 (file)
--- a/config/rootfiles/core/74/update.sh
+++ b/config/rootfiles/core/74/update.sh
@@ -48,6 +48,7 @@ if [ -e "/var/ipfire/proxy/enable" ] || [ -e "/var/ipfire/proxy/enable_blue" ];
                eval $(/usr/local/bin/readhash /var/ipfire/proxy/advanced/settings)
 
                if [ "${TRANSPARENT_PORT}" = "81" ]; then
+                       TRANSPARENT_PORT="$(( ${TRANSPARENT_PORT} + 1 ))"
                        sed -e "s/^TRANSPARENT_PORT=.*/TRANSPARENT_PORT=${TRANSPARENT_PORT}/" \
                                -i /var/ipfire/proxy/advanced/settings
                fi