That version is now dead
http://news.softpedia.com/news/ubuntu-17-04-zesty-zapus-has-reached-end-of-life-upgrade-to-ubuntu-17-10-now-519360.shtml
** Changed in: linux (Ubuntu)
Status: Confirmed => Invalid
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** Tags removed: need-duplicate-check
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https://bugs.launchpad.net/bugs/1692549
Title:
package linux-image-4.10.0-21-generic 4.10.0-21.23 failed to
install/upgrade: subprocess new pre-
** Attachment added: "version.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1692549/+attachment/4881466/+files/version.log
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Title:
** Attachment added: "lspci-vnvn.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1692549/+attachment/4881467/+files/lspci-vnvn.log
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T