if ! zone_has_ipv4 ${zone} ${ADDRESS}/${PREFIX}; then
if ipv4_detect_duplicate ${zone} ${ADDRESS}; then
- error_log "Duplicate address detected on zone '${zone}' (${address})."
+ error_log "Duplicate address detected on zone '${zone}' (${ADDRESS})."
error_log "Cannot continue."
exit ${EXIT_ERROR}
fi