A container is configured to listen for DNS requests on all IP's on port 54:
/usr/bin/docker-proxy -proto udp -host-ip 0.0.0.0 -host-port 54 -container-ip 172.19.0.2 -container-port 53
When I do a request from another container (in an isolated network from the DNS server container):
root@a9e4256c5510:/# dig google.nl @192.168.0.155 -p 54
;; reply from unexpected source: 172.17.0.1#54, expected 192.168.0.155#54
thinkbox :: work/dockers/bind » sudo tcpdump -n -i docker0
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on docker0, link-type EN10MB (Ethernet), capture size 262144 bytes
16:23:17.239359 IP 172.17.0.2.60735 > 192.168.0.155.54: UDP, length 38
16:23:17.432102 IP 172.17.0.1.54 > 172.17.0.2.60735: UDP, length 200
When I configure the container to just listen on 192.168.0.155:
/usr/bin/docker-proxy -proto udp -host-ip 192.168.0.155 -host-port 54 -container-ip 172.19.0.2 -container-port 53
It works correctly:
thinkbox :: work/dockers/bind » sudo tcpdump -n -i docker0
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on docker0, link-type EN10MB (Ethernet), capture size 262144 bytes
16:22:45.792460 IP 172.17.0.2.44517 > 192.168.0.155.54: UDP, length 38
16:22:45.792847 IP 192.168.0.155.54 > 172.17.0.2.44517: UDP, length 200
A container is configured to listen for DNS requests on all IP's on port 54:
When I do a request from another container (in an isolated network from the DNS server container):
When I configure the container to just listen on
192.168.0.155:It works correctly: