virtuozzo openvz centos 7 container network not start after update

After yum upgrade in may 2019 now i have following: network in container not start. nothing in log ps ax show, that network start script running forever /bin/bash /etc/sysconfig/network-scripts/ifup-eth ifcfg-lo After investigating(adding additional debug echo commands) i can see that this line in script never ends ip link set dev venet0 up Any ideas what i have check after that?