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Date:   Mon, 03 Apr 2017 13:30:40 -0700 (PDT)
From:   David Miller <>
Subject: Re: [PATCH net-next v4 1/2] New kernel function to get IP overhead
 on a socket.

From: "R. Parameswaran" <>
Date: Mon, 3 Apr 2017 13:28:11 -0700 (PDT)

> Can I take this to mean that we do need to factor in IP options in 
> the L2TP device MTU setup (i.e approach in the posted patch is okay)? 
> If yes, please let me know if I can keep the socket IP option overhead 
> calculations in a generic function, or it would be better to move it back into 
> L2TP code? 

If the user creates and maintains this UDP socket, then yes we have to
account for potential IP options.

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