Conditional Forwarding DNS fix (#27)

* Make dnsmasq listen to the container network

* Conditional Forwarding for NextDNS

* Update nextdns.conf

Author: boostchicken

dns-common/on_boot.d/10-dns.sh

@@ -69,6 +69,12 @@ 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

nextdns/udm-files/nextdns.conf

@@ -4,4 +4,14 @@ listen :53
 report-client-info yes
 cache-size=10MB
 
+# Change this if you changed your subnet, should point to your router, comment out
+# if you want to discover via DHCP
+discovery-dns 10.0.5.1
+
+# Change and uncomment this if you want to resolve your local ips
+# forwarder your.domain=10.0.5.1
+
+# Change and uncomment if you want to resolve ptr records
+# bogus-priv false
+# forwarder 10.in-addr.arpa=10.0.5.1
 config YOURIDHERE