[ocf] Fix OCF resources not discoverable on FRDM-K64F

[jimmy-huang]

This patch fixes the issue that multicast discovery messages cannot be
routed to the server after Zephyr update 1.11 with IPV6, but turning on
promiscuous mode resolves this issue.

Fixes #1885

Signed-off-by: Jimmy Huang jimmy.huang@intel.com

[grgustaf]

See if the solution from #1881 would work for this too... (see discussion in #1842 where @pfalcon showed the right way to solve it).

[jimmy-huang]

@grgustaf Yeah, that solution didn't work, in fact, ocf already sets CONFIG_NET_IF_MCAST_IPV6_ADDR_COUNT=4, and I tried increasing it with no success either, until I turned on promiscuous mode, then it worked, that's why I am hoping @pfalcon might know the real answer here.

[pfalcon]

@pfalcon might know the real answer here.

I don't know the exact answer.

CONFIG_NET_IF_MCAST_IPV6_ADDR_COUNT=4, and I tried increasing it with no success either

To what value did you increase it? How many multicast addresses does OCF require?

[jimmy-huang]

@pfalcon I've tried ranges from 4 up to 8, I believe ocf only requires 1 multicast addr for the discovery.