Update error after errata602

UCS - Univention Corporate Server
#1

Hi everyone!
When UCS was trying to update today, it gave the following error. What should I do?

Sincerely,
Michael Voigt

Starting univention-upgrade. Current UCS version is 4.4-4 errata602

2020-05-20 08:37:14,537 CRITICAL:updater.Updater:Failed server detection: Configuration error: Temporary failure in name resolution
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/univention/updater/tools.py", line 924, in ucr_reinit
    assert self.server.access(None, '')
  File "/usr/lib/python2.7/dist-packages/univention/updater/tools.py", line 709, in access
    raise ConfigurationError(uri, reason)
ConfigurationError: Configuration error: Temporary failure in name resolution

Starting univention-upgrade. Current UCS version is 4.4-4 errata602

Checking for package updates:                           Traceback in univention-upgrade:
Traceback (most recent call last):
  File "/usr/sbin/univention-upgrade", line 445, in do_update
    update_available = performUpdate(options, checkForUpdates=options.check, silent=False)
  File "/usr/sbin/univention-upgrade", line 141, in performUpdate
    if func(options, checkForUpdates, silent):
  File "/usr/sbin/univention-upgrade", line 196, in do_package_updates
    new_packages, upgraded_packages, removed_packages = updater.component_update_get_packages()
  File "/usr/lib/python2.7/dist-packages/univention/updater/tools.py", line 1313, in component_update_get_packages
    raise UnmetDependencyError(stderr)
UnmetDependencyError: You have unmet dependencies E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).
#2

Got the same error. What to do? Please help. Need to upgrade the system.

#3

Hi.
First, I ran the command “apt --fix-broken install”
Second, I disabled ipv6
Edit the /etc/sysctl.conf file
Insert these lines at the end of the file

net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
net.ipv6.conf.br0.disable_ipv6 = 1

restart the server, and try to update again.

Regards,
Michael

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