From: David Miller <da...@davemloft.net> > Sent: 12 May 2020 00:10 > From: David Laight <david.lai...@aculab.com> > Date: Mon, 11 May 2020 21:28:18 +0000 > > > In this case the "modified in userspace meanwhile" just breaks the > > application - it isn't any kind of security issue. > > The kernel must provide correct behavior based upon the stable IP > header that it copies into userspace. I'm not moving on this > requirement, sorry. > > I'm sure you have great reasons why you can't use normal UDP sockets > for RTP traffic, but that's how you will get a cached route and avoid > this exact problem.
Not unless you can tell me how to create a UDP socket that doesn't receive data. Even if there is a corresponding RTP receive flow there is no reason why it should use the same port numbers and IP addresses. David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)