VPP in VyOS runs under systemd control, and the system’s syslog (including VPP logs) is captured and stored by journald.
For an unknown reason, this setup results in all VPP messages being duplicated in journald.
vyos@vyos# sudo journalctl -b --unit vpp | tee Nov 19 14:46:07 vyos systemd[1]: Starting vector packet processing engine... Nov 19 14:46:07 vyos systemd[1]: Started vector packet processing engine. Nov 19 14:46:09 vyos vpp[4295]: vpp[4295]: vnet_feature_arc_init:272: feature node 'ip4-dhcp-client-detect' not found (before 'det44-out2in', arc 'ip4-unicast') Nov 19 14:46:09 vyos vpp[4295]: vpp[4295]: vnet_feature_arc_init:272: feature node 'ip4-dhcp-client-detect' not found (before 'nat44-ei-out2in', arc 'ip4-unicast') Nov 19 14:46:09 vyos vpp[4295]: vpp[4295]: vnet_feature_arc_init:272: feature node 'ip4-dhcp-client-detect' not found (before 'nat44-ei-out2in-worker-handoff', arc 'ip4-unicast') Nov 19 14:46:09 vyos vpp[4295]: vpp[4295]: vnet_feature_arc_init:272: feature node 'ip4-dhcp-client-detect' not found (before 'nat-pre-out2in', arc 'ip4-unicast') Nov 19 14:46:09 vyos vpp[4295]: vpp[4295]: vnet_feature_arc_init:272: feature node 'ip4-dhcp-client-detect' not found (before 'nat44-out2in-worker-handoff', arc 'ip4-unicast') Nov 19 14:46:09 vyos vpp[4295]: vpp[4295]: vnet_feature_arc_init:272: feature node 'ip4-dhcp-client-detect' not found (before 'nat44-ed-out2in', arc 'ip4-unicast') Nov 19 14:46:09 vyos vpp[4295]: vnet_feature_arc_init:272: feature node 'ip4-dhcp-client-detect' not found (before 'det44-out2in', arc 'ip4-unicast') Nov 19 14:46:09 vyos vpp[4295]: vnet_feature_arc_init:272: feature node 'ip4-dhcp-client-detect' not found (before 'nat44-ei-out2in', arc 'ip4-unicast') Nov 19 14:46:09 vyos vpp[4295]: vnet_feature_arc_init:272: feature node 'ip4-dhcp-client-detect' not found (before 'nat44-ei-out2in-worker-handoff', arc 'ip4-unicast') Nov 19 14:46:09 vyos vpp[4295]: vnet_feature_arc_init:272: feature node 'ip4-dhcp-client-detect' not found (before 'nat-pre-out2in', arc 'ip4-unicast') Nov 19 14:46:09 vyos vpp[4295]: vnet_feature_arc_init:272: feature node 'ip4-dhcp-client-detect' not found (before 'nat44-out2in-worker-handoff', arc 'ip4-unicast') Nov 19 14:46:09 vyos vpp[4295]: vnet_feature_arc_init:272: feature node 'ip4-dhcp-client-detect' not found (before 'nat44-ed-out2in', arc 'ip4-unicast') Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: adl plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: adl plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: arping plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: arping plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: cdp plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: cdp plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: ct6 plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: ct6 plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: dhcp plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: dhcp plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: dns plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: dns plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: gtpu plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: gtpu plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: http_static plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: http_static plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: idpf plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: idpf plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: ikev2 plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: ikev2 plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: pot_vat_plugin_register: pot plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: pot_vat_plugin_register: pot plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: ip_session_redirect plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: ip_session_redirect plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: l2tp plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: l2tp plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: lb plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: lb plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register_gpe: lisp_gpe plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register_gpe: lisp_gpe plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: lldp plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: lldp plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: mactime plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: mactime plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: mdata plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: mdata plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: memif plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: memif plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: nsh plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: nsh plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: nsim plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: nsim plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: rdma plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: rdma plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: sr_mpls plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: sr_mpls plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: stn plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: stn plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: tls_openssl plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: tls_openssl plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: vat-plug/load: vat_plugin_register: vrrp plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vat-plug/load: vat_plugin_register: vrrp plugin not loaded... Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: clib_c11_violation: s1 NULL Nov 19 14:46:10 vyos vpp[4295]: vpp[4295]: clib_c11_violation: s2 NULL Nov 19 14:46:10 vyos vpp[4295]: clib_c11_violation: s1 NULL Nov 19 14:46:10 vyos vpp[4295]: clib_c11_violation: s2 NULL
We need to eliminate the redundant logging entries.