#!/bin/bash

NAMED_CONF="/etc/bind/named.conf.options"

[ "$USEPEERDNS" ] || exit 0
[ "$DNS1" -a "$DNS2" ] || exit 0

# replace forwarders
awk '/forwarders {/ { active = 1; print }	\
	/};/ {					\
	    if ( active == 1 ) {		\
	        active = 0;			\
	        print "\t\t" f1 ";";		\
	        print "\t\t" f2 ";";		\
	    }					\
	}					\
	{					\
	    if ( active == 0 )			\
	        print;				\
	} '					\
    f1=$DNS1 f2=$DNS2 $NAMED_CONF > ${NAMED_CONF}.${PPP_IFACE}

mv ${NAMED_CONF}.${PPP_IFACE} $NAMED_CONF

# restart if running
[ -f "/var/run/bind/run/named.pid" ] && rdnc reconfig

exit 0