MRT_INIT failed; Errno(92): Protocol not available

Question

MRT_INIT failed; Errno(92): Protocol not available

shockingchen opened this issue 3 years ago · comments

when I run igmpproxy,it throws an error,what is the root cause?
igmpproxy -d /usr/local/etc/igmpproxy.conf
MRT_INIT failed; Errno(92): Protocol not available

I build it on gcc version 7.5.0 (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04
where is the man doc? can I use it to develop the igmp snooping function？

thanks

Aim Wang · Answer 1 · Sat Feb 26 2022 10:24:44 GMT+0800 (China Standard Time)

Because kernel not support multicast route.
Could you check kernel .config if set CONFIG_IP_MROUTE or not when build.

igmp proxy and igmp snooping are implement on different topology.
proxy for route and snooping for bridge.

shockingchen · Answer 2 · Sat Feb 26 2022 13:18:50 GMT+0800 (China Standard Time)

thank you for your reply,I will have a try.
by the way,is there some tools for the igmp snooping for bridge with vlan? or how to develop the igmp snooping funtion?

regards

Aim Wang · Answer 3 · Sun Feb 27 2022 08:25:24 GMT+0800 (China Standard Time)

Igmp-snooping will snooping igmp packet to decide multicast transport to which ports. The igmp-snooping should be implemented on switch control ic. You have to ask ic vendor how to handle igmp-snooping, usually via register.