Bug#903914: xen_netfront broken in 4.9.110-1

[Elliott Mitchell <ehem+debian@m5p.com>]

Package: linux-source-4.9
Version: 4.9.110-1

Anyone who was using jumbo frames inside a Xen guest was fine with
4.9.88-1+deb9u1, but a problem suddenly showed up with 4.9.110-1.

Discussion of problem:

https://lists.gt.net/xen/devel/519117

Something which acts like a working patch is here:

http://ubuntu.5.x6.nabble.com/Xenial-Regression-SRU-Fix-quot-Cannot-set-MTU-higher-than-1500-in-Xen-instance-quot-td5170202.html


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