netopeer-server[87339]: Shared memory key: -4
netopeer-server[87339]: Shared memory ID: 32813
netopeer-server[87339]: ncds_features_parse: no feature definitions found in data model ietf-inet-types.
netopeer-server[87339]: ncds_features_parse: no feature definitions found in data model ietf-yang-types.
netopeer-server[87339]: ncds_features_parse: no feature definitions found in data model ietf-netconf-monitoring.
netopeer-server[87339]: ncds_features_parse: no feature definitions found in data model ietf-netconf-notifications.
netopeer-server[87339]: ncds_features_parse: no feature definitions found in data model nc-notifications.
netopeer-server[87339]: ncds_features_parse: no feature definitions found in data model notifications.
netopeer-server[87339]: ncds_features_parse: no feature definitions found in data model ietf-netconf-with-defaults.
netopeer-server[87339]: ncds_features_parse: no feature definitions found in data model ietf-netconf-acm.
netopeer-server[87339]: ncds_set_validation: Relax NG validator set (//var/lib/libnetconf//ietf-netconf-acm-data.rng)
netopeer-server[87339]: ncds_set_validation: Schematron validator set (//var/lib/libnetconf//ietf-netconf-acm-schematron.xsl)
netopeer-server[87339]: Datastore ietf-netconf-acm initiated with ID 8.
netopeer-server[87339]: Checking the default Events stream path //var/lib/libnetconf//streams/.
netopeer-server[87339]: Unable to became primary owner of the org.liberouter.netopeer.server
netopeer-server[87339]: Communication subsystem not initiated.
I do not remember what this error is about so I am unable to help. You should be using netopeer2 for years now, anyway. netopeer is not being maintained for 5 years and is completely obsolete.
netopeer-server[87339]: Shared memory key: -4 netopeer-server[87339]: Shared memory ID: 32813 netopeer-server[87339]: ncds_features_parse: no feature definitions found in data model ietf-inet-types. netopeer-server[87339]: ncds_features_parse: no feature definitions found in data model ietf-yang-types. netopeer-server[87339]: ncds_features_parse: no feature definitions found in data model ietf-netconf-monitoring. netopeer-server[87339]: ncds_features_parse: no feature definitions found in data model ietf-netconf-notifications. netopeer-server[87339]: ncds_features_parse: no feature definitions found in data model nc-notifications. netopeer-server[87339]: ncds_features_parse: no feature definitions found in data model notifications. netopeer-server[87339]: ncds_features_parse: no feature definitions found in data model ietf-netconf-with-defaults. netopeer-server[87339]: ncds_features_parse: no feature definitions found in data model ietf-netconf-acm. netopeer-server[87339]: ncds_set_validation: Relax NG validator set (//var/lib/libnetconf//ietf-netconf-acm-data.rng) netopeer-server[87339]: ncds_set_validation: Schematron validator set (//var/lib/libnetconf//ietf-netconf-acm-schematron.xsl) netopeer-server[87339]: Datastore ietf-netconf-acm initiated with ID 8. netopeer-server[87339]: Checking the default Events stream path //var/lib/libnetconf//streams/. netopeer-server[87339]: Unable to became primary owner of the org.liberouter.netopeer.server netopeer-server[87339]: Communication subsystem not initiated.