- cat > /etc/default/ntp-servers <<EOF
-NTPSERVERS="zg1.ntp.carnet.hr ri.ntp.carnet.hr zg2.ntp.carnet.hr 127.127.1.0"
-EOF
+ # Load CARNet Tools
+ . /usr/share/carnet-tools/functions.sh
+
+ cp_check_and_sed 'NTPSERVERS' \
+ "s/^.*NTPSERVERS.*/NTPSERVERS=\"zg1.ntp.carnet.hr ri.ntp.carnet.hr zg2.ntp.carnet.hr st.ntp.carnet.hr os.ntp.carnet.hr 127.127.1.0\"/g" \
+ /etc/default/ntpservers || true