Comment 4 for bug 1162924

That information sounds incorrect. The changes for XSA-39 which caused this regressions where to xen-netback (the driver in dom0). The problem is that this depends on MAX_SKB_FRAGS which changed in v3.3 from 18 to 17. So if dom0 runs a v3.3 or later kernel with XSA-39 applied, it will shutdown the network for any guest that uses a bigger value than 17 (which is pre v3.3 linux guests but from descriptions it seems also some Windows guests). I think the patches below (which probably are in v3.10) will fix this. But those will have to be applied to dom0 kernels.

commit 2810e5b9a7731ca5fce22bfbe12c96e16ac44b6f
Author: Wei Liu <email address hidden>
Date: Mon Apr 22 02:20:42 2013 +0000

    xen-netback: coalesce slots in TX path and fix regressions

commit 03393fd5cc2b6cdeec32b704ecba64dbb0feae3c
Author: Wei Liu <email address hidden>
Date: Mon Apr 22 02:20:43 2013 +0000

    xen-netback: don't disconnect frontend when seeing oversize packet