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Update 10-dns.sh

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Removing use masq rules that cause more issues, script cleanup
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John D 2020-07-19 22:01:54 -07:00 committed by GitHub
parent 227c01005f
commit 49e3dccf14
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1 changed files with 3 additions and 9 deletions
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12
dns-common/on_boot.d/10-dns.sh
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@ -29,13 +29,13 @@ CONTAINER=nextdns
## network configuration and startup:
CNI_PATH=/mnt/data/podman/cni
if [ ! -f "$CNI_PATH"/macvlan ]
then
if [ ! -f "$CNI_PATH"/macvlan ]; then
mkdir -p $CNI_PATH
curl -L https://github.com/containernetworking/plugins/releases/download/v0.8.6/cni-plugins-linux-arm64-v0.8.6.tgz | tar -xz -C $CNI_PATH
fi
mkdir -p /opt/cni
rm -f /opt/cni/bin
ln -s $CNI_PATH /opt/cni/bin
for file in "$CNI_PATH"/*.conflist
@ -81,17 +81,11 @@ for intfc in ${FORCED_INTFC}; do
for proto in udp tcp; do
prerouting_rule="PREROUTING -i ${intfc} -p ${proto} ! -s ${IPV4_IP} ! -d ${IPV4_IP} --dport 53 -j DNAT --to ${IPV4_IP}"
iptables -t nat -C ${prerouting_rule} || iptables -t nat -A ${prerouting_rule}
postrouting_rule="POSTROUTING -o ${intfc} -d ${IPV4_IP} -p ${proto} --dport 53 -j MASQUERADE"
iptables -t nat -C ${postrouting_rule} || iptables -t nat -A ${postrouting_rule}
# (optional) IPv6 force DNS (TCP/UDP 53) through DNS container
if [ -n "${IPV6_IP}" ]; then
prerouting_rule="PREROUTING -i ${intfc} -p ${proto} ! -s ${IPV6_IP} ! -d ${IPV6_IP} --dport 53 -j DNAT --to ${IPV6_IP}"
ip6tables -t nat -C ${prerouting_rule} || ip6tables -t nat -A ${prerouting_rule}
postrouting_rule="POSTROUTING -o ${intfc} -d ${IPV6_IP} -p ${proto} --dport 53 -j MASQUERADE"
ip6tables -t nat -C ${postrouting_rule} || ip6tables -t nat -A ${postrouting_rule}
fi
done
fi