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Date:   Thu, 21 Feb 2019 13:05:28 -0800 (PST)
From:   David Miller <>
Subject: Re: [PATCH net-next v6] ipmr: ip6mr: Create new sockopt to clear
 mfc cache or vifs

From: Callum Sinclair <>
Date: Mon, 18 Feb 2019 10:07:51 +1300

> Created a way to clear the multicast forwarding cache on a socket
> without having to either remove the entries manually using the delete
> entry socket option or destroy and recreate the multicast socket.
> Calling the socket option MRT_FLUSH will allow any combination of the
> four flag options to be cleared.
> MRT_FLUSH_MFC will clear all non static mfc entries and clear the unresolved cache
> MRT_FLUSH_MFC_STATIC will clear all static mfc entries
> MRT_FLUSH_VIFS will clear all non static interfaces
> MRT_FLUSH_VIFS_STATIC will clear all static interfaces.


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