install/51163: etc.tgz -- tar: End of archive volume 1 reached

[tschweikle%gmail.com@localhost]

>Number:         51163
>Category:       install
>Synopsis:       etc.tgz -- tar: End of archive volume 1 reached
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    install-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue May 24 08:35:00 +0000 2016
>Originator:     Thomas Schweikle
>Release:        HEAD/201605240000Z
>Organization:
>Environment:
NetBSD nbsd8l-64.bfs.de 7.99.29 NetBSD 7.99.29 (GENERIC.201605110840Z) amd64
>Description:
Downloaded archive etc.tgz is incomplete -- seems to be incomplete on all available servers.
>How-To-Repeat:
goto http://nyftp.netbsd.org/pub/NetBSD-daily/HEAD/201605240000Z/amd64//binary/sets/etc.tgz

Download will be OK. Then


sysupgrade: I: Performing postinstall checks
Note: Creating temporary directory /tmp/_postinstall.5554.0/etc.tgz
Note: Extracting files from /var/cache/sysupgrade/etc.tgz
tar: End of archive volume 1 reached
tar: Sorry, unable to determine archive format.
postinstall: Can't extract /var/cache/sysupgrade/etc.tgz
postinstall: /tmp/_postinstall.5554.0/etc.tgz is not a directory
Note: Creating temporary directory /tmp/_postinstall.3966.0/etc.tgz
Note: Extracting files from /var/cache/sysupgrade/etc.tgz
tar: End of archive volume 1 reached
tar: Sorry, unable to determine archive format.
postinstall: Can't extract /var/cache/sysupgrade/etc.tgz
postinstall: /tmp/_postinstall.3966.0/etc.tgz is not a directory
sysupgrade: E: Some postinstall(8) checks have failed

The archive seems not to have any useful format tar could work with.
>Fix:
repack etc.tgz??