mirror of
https://github.com/unifi-utilities/unifios-utilities.git
synced 2024-08-30 18:32:21 +00:00
103 lines
3.7 KiB
Bash
103 lines
3.7 KiB
Bash
#!/bin/sh
|
|
|
|
## configuration variables:
|
|
VLAN=5
|
|
IPV4_IP="10.0.5.3"
|
|
# This is the IP address of the container. You may want to set it to match
|
|
# your own network structure such as 192.168.5.3 or similar.
|
|
IPV4_GW="10.0.5.1/24"
|
|
# As above, this should match the gateway of the VLAN for the container
|
|
# network as above which is usually the .1/24 range of the IPV4_IP
|
|
|
|
# if you want IPv6 support, generate a ULA, select an IP for the dns server
|
|
# and an appropriate gateway address on the same /64 network. Make sure that
|
|
# the 20-dns.conflist is updated appropriately. It will need the IP and GW
|
|
# added along with a ::/0 route. Also make sure that additional --dns options
|
|
# are passed to podman with your IPv6 DNS IPs when deploying the container for
|
|
# the first time. You will also need to configure your VLAN to have a static
|
|
# IPv6 block.
|
|
|
|
# IPv6 Also works with Prefix Delegation from your provider. The gateway is the
|
|
# IP of br(VLAN) and you can pick any ip address within that subnet that dhcpv6
|
|
# isn't serving
|
|
IPV6_IP=""
|
|
IPV6_GW=""
|
|
|
|
# set this to the interface(s) on which you want DNS TCP/UDP port 53 traffic
|
|
# re-routed through the DNS container. separate interfaces with spaces.
|
|
# e.g. "br0" or "br0 br1" etc.
|
|
FORCED_INTFC=""
|
|
|
|
# container name; e.g. nextdns, pihole, adguardhome, etc.
|
|
CONTAINER=nextdns
|
|
|
|
## network configuration and startup:
|
|
CNI_PATH=/mnt/data/podman/cni
|
|
if [ ! -f "$CNI_PATH"/macvlan ]; then
|
|
mkdir -p $CNI_PATH
|
|
curl -L https://github.com/containernetworking/plugins/releases/download/v0.9.0/cni-plugins-linux-arm64-v0.9.0.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
|
|
do
|
|
if [ -f "$file" ]; then
|
|
ln -fs "$file" "/etc/cni/net.d/$(basename "$file")"
|
|
fi
|
|
done
|
|
|
|
# set VLAN bridge promiscuous
|
|
ip link set br${VLAN} promisc on
|
|
|
|
# create macvlan bridge and add IPv4 IP
|
|
ip link add br${VLAN}.mac link br${VLAN} type macvlan mode bridge
|
|
ip addr add ${IPV4_GW} dev br${VLAN}.mac noprefixroute
|
|
|
|
# (optional) add IPv6 IP to VLAN bridge macvlan bridge
|
|
if [ -n "${IPV6_GW}" ]; then
|
|
ip -6 addr add ${IPV6_GW} dev br${VLAN}.mac noprefixroute
|
|
fi
|
|
|
|
# set macvlan bridge promiscuous and bring it up
|
|
ip link set br${VLAN}.mac promisc on
|
|
ip link set br${VLAN}.mac up
|
|
|
|
# add IPv4 route to DNS container
|
|
ip route add ${IPV4_IP}/32 dev br${VLAN}.mac
|
|
|
|
# (optional) add IPv6 route to DNS container
|
|
if [ -n "${IPV6_IP}" ]; then
|
|
ip -6 route add ${IPV6_IP}/128 dev br${VLAN}.mac
|
|
fi
|
|
|
|
# Make DNSMasq listen to the container network for split horizon or conditional forwarding
|
|
if ! grep -qxF interface=br$VLAN.mac /run/dnsmasq.conf.d/custom.conf; then
|
|
echo interface=br$VLAN.mac >> /run/dnsmasq.conf.d/custom.conf
|
|
kill -9 `cat /run/dnsmasq.pid`
|
|
fi
|
|
|
|
if podman container exists ${CONTAINER}; then
|
|
podman start ${CONTAINER}
|
|
else
|
|
logger -s -t podman-dns -p ERROR Container $CONTAINER not found, make sure you set the proper name, you can ignore this error if it is your first time setting it up
|
|
fi
|
|
|
|
# (optional) IPv4 force DNS (TCP/UDP 53) through DNS container
|
|
for intfc in ${FORCED_INTFC}; do
|
|
if [ -d "/sys/class/net/${intfc}" ]; then
|
|
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 ${prerouting_rule}
|
|
|
|
# (optional) IPv6 force DNS (TCP/UDP 53) through DNS container
|
|
if [ -n "${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}
|
|
fi
|
|
done
|
|
fi
|
|
done
|