[HTCondor-users] Error using condor_status

[Andreas Resch <andreas.resch@xxxxxxxxxxxxxxxx>]

Hi,

after an OS upgrade from Ubuntu 14.04 to 18.04, the condor_status 
command gives me following error message:
Error: communication error
SECMAN:2007:Failed to end classad message.

From the log files I get the impression that there is sth. wrong with 
the network settings, which are as follows:

BIND_ALL_INTERFACES = true
NETWORK_INTERFACE = enp4s0f0  # this was eth0 in the old system
CONDOR_HOST = 10.8.0.1
PRIVATE_NETWORK_NAME = vpn
PRIVATE_NETWORK_INTERFACE = tun0

Any hints how to solve this issue?
CondorVersion: 8.6.8
OS: Ubuntu 18.04

best,
Andreas