The proxy shows no attempts to download Release.gpg, just InRelease:
18/Jan/2017:12:29:02 +0000 69 y.y.y.y TCP_MISS/404 631 GET http://ubuntu-cloud.archive.canonical.com/ubuntu/dists/xenial-updates/newton/InRelease - FIRSTUP_PARENT/x.x.x.x text/html 18/Jan/2017:12:29:02 +0000 67 y.y.y.y TCP_REFRESH_UNMODIFIED/304 335 GET http://ubuntu-cloud.archive.canonical.com/ubuntu/dists/xenial-updates/newton/Release - FIRSTUP_PARENT/x.x.x.x - 18/Jan/2017:12:29:02 +0000 133 y.y.y.y TCP_REFRESH_UNMODIFIED/304 420 GET http://archive.ubuntu.com/ubuntu/dists/xenial/InRelease - FIRSTUP_PARENT/x.x.x.x - 18/Jan/2017:12:29:02 +0000 134 y.y.y.y TCP_REFRESH_UNMODIFIED/304 438 GET http://security.ubuntu.com/ubuntu/dists/xenial-security/InRelease - FIRSTUP_PARENT/x.x.x.x - 18/Jan/2017:12:29:02 +0000 67 y.y.y.y TCP_REFRESH_UNMODIFIED/304 423 GET http://archive.ubuntu.com/ubuntu/dists/xenial-updates/InRelease - FIRSTUP_PARENT/x.x.x.x - 18/Jan/2017:12:29:02 +0000 66 y.y.y.y TCP_REFRESH_UNMODIFIED/304 420 GET http://archive.ubuntu.com/ubuntu/dists/xenial-backports/InRelease - FIRSTUP_PARENT/x.x.x.x -
The proxy shows no attempts to download Release.gpg, just InRelease:
18/Jan/ 2017:12: 29:02 +0000 69 y.y.y.y TCP_MISS/404 631 GET http:// ubuntu- cloud.archive. canonical. com/ubuntu/ dists/xenial- updates/ newton/ InRelease - FIRSTUP_ PARENT/ x.x.x.x text/html 2017:12: 29:02 +0000 67 y.y.y.y TCP_REFRESH_ UNMODIFIED/ 304 335 GET http:// ubuntu- cloud.archive. canonical. com/ubuntu/ dists/xenial- updates/ newton/ Release - FIRSTUP_ PARENT/ x.x.x.x - 2017:12: 29:02 +0000 133 y.y.y.y TCP_REFRESH_ UNMODIFIED/ 304 420 GET http:// archive. ubuntu. com/ubuntu/ dists/xenial/ InRelease - FIRSTUP_ PARENT/ x.x.x.x - 2017:12: 29:02 +0000 134 y.y.y.y TCP_REFRESH_ UNMODIFIED/ 304 438 GET http:// security. ubuntu. com/ubuntu/ dists/xenial- security/ InRelease - FIRSTUP_ PARENT/ x.x.x.x - 2017:12: 29:02 +0000 67 y.y.y.y TCP_REFRESH_ UNMODIFIED/ 304 423 GET http:// archive. ubuntu. com/ubuntu/ dists/xenial- updates/ InRelease - FIRSTUP_ PARENT/ x.x.x.x - 2017:12: 29:02 +0000 66 y.y.y.y TCP_REFRESH_ UNMODIFIED/ 304 420 GET http:// archive. ubuntu. com/ubuntu/ dists/xenial- backports/ InRelease - FIRSTUP_ PARENT/ x.x.x.x -
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