Sounds like they want both the Xenial and Yakkety kernels tested. You should be able to install the yakkety kernel on Xenial if you don't want to upgrade now.
It may be easier to just grab the relevant packages from the launchpad page: https://launchpad.net/ubuntu/+source/linux https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/ppa/+build/12486778/+files/linux-image-4.4.0-78-generic_4.4.0-78.99_amd64.deb https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/bootstrap/+build/12492144/+files/linux-image-4.8.0-52-generic_4.8.0-52.55_amd64.deb
Sounds like they want both the Xenial and Yakkety kernels tested. You should be able to install the yakkety kernel on Xenial if you don't want to upgrade now.
It may be easier to just grab the relevant packages from the launchpad page: /launchpad. net/ubuntu/ +source/ linux /launchpad. net/~canonical- kernel- team/+archive/ ubuntu/ ppa/+build/ 12486778/ +files/ linux-image- 4.4.0-78- generic_ 4.4.0-78. 99_amd64. deb /launchpad. net/~canonical- kernel- team/+archive/ ubuntu/ bootstrap/ +build/ 12492144/ +files/ linux-image- 4.8.0-52- generic_ 4.8.0-52. 55_amd64. deb
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