config_query_option  BIND_CAPS  "Enable Linux kernel capset capability?"  y  \
                     "--enable-linux-caps"   "--disable-linux-caps"          &&

config_query_option  BIND_IPV6  "Enable IPv6 support?"  y  \
                     "--enable-ipv6"   "--disable-ipv6"    &&

# let's ask if we should backup/restore /etc/bind
message "${MESSAGE_COLOR}bind configuration files may be overwritten. You should backup and restore configuration files and reply Y to the next two questions...${DEFAULT_COLOR}"
config_query  BACKUP   "backup config on dispel?"  y
config_query  RESTORE  "restore config on rebuild/update?"  y

.