Hi Xin, On Mon, Jun 25, 2018 at 10:45:08AM +0800, Xin Long wrote: > This patch implements the feature described in rfc1812#section-5.3.5.2 > and rfc2644. It allows the router to forward directed broadcast when > sysctl mc_forwarding is enabled.
You mean bc_forwarding? > > Note that this feature could be done by iptables -j TEE, but it would > cause some problems: > - target TEE's gateway param has to be set with a specific address, > and it's not flexible especially when the route wants forward all > directed broadcasts. > - this duplicates the directed broadcasts so this may cause side > effects to applications. > > Besides, to keep consistent with other os router like BSD, it's also > necessary to implement it in the route rx path. Regarding the test you posted later in the thread, did you consider adding it as part of tools/testing/selftests/net/forwarding/ ? I believe you can write the test using VRFs instead of name spaces. Thanks
