Re-append any aliases after changing dynamic dns provider

src/freedombone-ddns

     fi
 
     if ! grep -q "$DDNS_PROVIDER" /etc/inadyn.conf; then
+        # store any previous aliases
+        grep 'alias ' /etc/inadyn.conf > /tmp/inadyn_aliases
+
         # remove entry for any previous ddns
         sed -i '/system /,$d' /etc/inadyn.conf
 
         if [ "$DDNS_PASSWORD" ]; then
             echo "  password $DDNS_PASSWORD" >> /etc/inadyn.conf
         fi
+
+        if [ -f /tmp/inadyn_aliases ]; then
+            cat /tmp/inadyn_aliases >> /etc/inadyn.conf
+            rm /tmp/inadyn_aliases
+        fi
     else
         # change username/password for an existing provider
         if [ "$DDNS_USERNAME" ]; then