core-agent-linux/netvm/qubes_setup_dnat_to_ns

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#!/bin/sh
addrule()
{
if [ $FIRSTONE = yes ] ; then
NS=$NS1
FIRSTONE=no
else
NS=$NS2
fi
iptables -A PREROUTING -t nat -d $NS -p udp --dport 53 -j DNAT \
--to "$1"
}
export PATH=$PATH:/sbin:/bin
source /var/run/qubes_ns
if [ "X"$NS1 = "X" ] ; then exit ; fi
iptables -t nat -F PREROUTING
FIRSTONE=yes
grep ^nameserver /etc/resolv.conf | head -2 | while read x y z ; do
addrule "$y"
done