currently i am trying to send some multicast data from my docker's application throughout my host's eth2 host interface. i did use --net=host option in docker and this was working perfectly, and unfortunately since i need to open multiple instances that uses same port, its impossible for me to use net=host anymore. i have to go through the bridged mode of docker0
in my docker's interface i have eth0 which is linked to my docker0 as
10.101.131.60.
therefore i did : route add -net 225.1.1.0/28 dev eth0 to pass all multicast packets that my app send to 225.1.1.0/28 to my eth0, which is connected to host as docker0.
therefore, i used wireshark to listen whether my application really throws the message packet to my eth0 inside container, and it really does sending multicasts when i use wireshark inside container.
now throughout i also used wireshark to listen to my docker0 and the packets were there. Now how do i "Forward all my multicast packets" throughout docker0 to my eth2? i used several iptables approach, but none of them seemed to be useful, perhaps that its being ignored?
any help would be appreciated... thanks!
You can use an IGMP proxy like this: https://sourceforge.net/projects/igmpproxy/
Good luck