I have a funny networking setup at home. I usually have my regular Ethernet interface, then on top of that one or two VLANs, and in addition to that, a Wireguard VPN to the lab and an active WIFI. Here's how the test suite fails, this time with just one VLAN and that Wireguard tunnel:
$ ctest -j666 --output-on-failure -R test-sysrepo_system-ietfinterfaces
Test project /home/jkt/work/prog/_build/czechlight-tsan-cl11/velia
Start 17: sysrepo:prep:sysrepo-czechlight-network
1/3 Test #17: sysrepo:prep:sysrepo-czechlight-network .... Passed 2.02 sec
Start 19: test-sysrepo_system-ietfinterfaces
2/3 Test #19: test-sysrepo_system-ietfinterfaces .........***Failed 0.83 sec
08.023 [417262 sysrepo I] Applying scheduled changes.
08.185 [417262 sysrepo I] File "[email protected]" was installed.
08.185 [417262 sysrepo I] Module "czechlight-network" was installed.
08.193 [417262 sysrepo I] Scheduled changes applied.
08.196 [417262 sysrepo I] Connection 135 created.
08.196 [417262 sysrepo I] Session 15 (user "jkt", CID 135) created.
08.213 [417262 sysrepo I] Scheduled changes not applied because of other existing connections.
08.281 [417262 sysrepo I] Connection 136 created.
08.281 [417262 sysrepo I] Session 16 (user "jkt", CID 136) created.
08.283 [417262 system T] Netlink update on link 'lo', action NEW
08.283 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='lo']/oper-status -> unknown
08.283 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='lo']/phys-address -> 00:00:00:00:00:00
08.283 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='lo']/type -> iana-if-type:softwareLoopback
08.284 [417262 system T] Netlink update on link 'enp2s0f0', action NEW
08.284 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='enp2s0f0']/oper-status -> up
08.284 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='enp2s0f0']/phys-address -> 00:2b:67:c3:58:b2
08.285 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='enp2s0f0']/type -> iana-if-type:ethernetCsmacd
08.286 [417262 system T] Netlink update on link 'wlp3s0', action NEW
08.286 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='wlp3s0']/oper-status -> up
08.286 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='wlp3s0']/phys-address -> 34:cf:f6:f1:af:36
08.287 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='wlp3s0']/type -> iana-if-type:ethernetCsmacd
08.289 [417262 system T] Netlink update on link 'virbr0', action NEW
08.289 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='virbr0']/oper-status -> down
08.289 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='virbr0']/phys-address -> 52:54:00:76:37:a3
08.289 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='virbr0']/type -> iana-if-type:bridge
08.292 [417262 system T] Netlink update on link 'fitlab', action NEW
08.292 [417262 system W] Encountered unknown interface type 65534, using 'iana-if-type:other'
08.292 [417262 main T] Processing node deletion /ietf-interfaces:interfaces/interface[name='fitlab']/phys-address
08.292 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='fitlab']/oper-status -> unknown
08.292 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='fitlab']/type -> iana-if-type:other
08.295 [417262 system T] Netlink update on link 'vlan-okorska', action NEW
08.295 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='vlan-okorska']/oper-status -> up
08.295 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='vlan-okorska']/phys-address -> 00:2b:67:c3:58:b2
08.295 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='vlan-okorska']/type -> iana-if-type:ethernetCsmacd
08.299 [417262 system T] Netlink update on address of link 'lo', action NEW
08.299 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='lo']/ietf-ip:ipv4/address[ip='127.0.0.1']/prefix-length -> 8
08.302 [417262 system T] Netlink update on address of link 'enp2s0f0', action NEW
08.303 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='enp2s0f0']/ietf-ip:ipv4/address[ip='78.45.154.159']/prefix-length -> 24
08.306 [417262 system T] Netlink update on address of link 'wlp3s0', action NEW
08.306 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='wlp3s0']/ietf-ip:ipv4/address[ip='172.26.133.20']/prefix-length -> 24
08.311 [417262 system T] Netlink update on address of link 'virbr0', action NEW
08.311 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='virbr0']/ietf-ip:ipv4/address[ip='192.168.122.1']/prefix-length -> 24
08.315 [417262 system T] Netlink update on address of link 'fitlab', action NEW
08.315 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='fitlab']/ietf-ip:ipv4/address[ip='10.0.253.3']/prefix-length -> 24
08.320 [417262 system T] Netlink update on address of link 'vlan-okorska', action NEW
08.320 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='vlan-okorska']/ietf-ip:ipv4/address[ip='172.26.133.33']/prefix-length -> 24
08.325 [417262 system T] Netlink update on address of link 'lo', action NEW
08.325 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='lo']/ietf-ip:ipv6/address[ip='::1']/prefix-length -> 128
08.330 [417262 system T] Netlink update on address of link 'enp2s0f0', action NEW
08.330 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='enp2s0f0']/ietf-ip:ipv6/address[ip='fe80::1c41:8d4:1037:f913']/prefix-length -> 64
08.336 [417262 system T] Netlink update on address of link 'wlp3s0', action NEW
08.336 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='wlp3s0']/ietf-ip:ipv6/address[ip='fe80::c817:f9fb:2953:3ab5']/prefix-length -> 64
08.342 [417262 system T] Netlink update on address of link 'virbr0', action NEW
08.342 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='virbr0']/ietf-ip:ipv6/address[ip='fe80::5054:ff:fe76:37a3']/prefix-length -> 64
08.349 [417262 system T] Netlink update on address of link 'fitlab', action NEW
08.349 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='fitlab']/ietf-ip:ipv6/address[ip='fe80::dafe:ee2a:12b0:910f']/prefix-length -> 64
08.356 [417262 system T] Netlink update on address of link 'vlan-okorska', action NEW
08.356 [417262 main T] Processing node update /ietf-interfaces:interfaces/interface[name='vlan-okorska']/ietf-ip:ipv6/address[ip='fe80::9533:3407:9edc:c4dd']/prefix-length -> 64
08.364 [417262 main T] Processing node update /ietf-routing:routing/ribs/rib[name='ipv4-master']/routes/route[10]/ietf-ipv4-unicast-routing:destination-prefix -> 192.168.122.0/24
08.364 [417262 main T] Processing node update /ietf-routing:routing/ribs/rib[name='ipv4-master']/routes/route[10]/next-hop/outgoing-interface -> virbr0
08.364 [417262 main T] Processing node update /ietf-routing:routing/ribs/rib[name='ipv4-master']/routes/route[10]/source-protocol -> direct
08.364 [417262 main T] Processing node update /ietf-routing:routing/ribs/rib[name='ipv4-master']/routes/route[1]/ietf-ipv4-unicast-routing:destination-prefix -> 0.0.0.0/0
libyang[0]: Node already exists. (path: /ietf-routing:routing/ribs/rib[name='ipv4-master']/routes/route[1]/ietf-ipv4-unicast-routing:destination-prefix)
[doctest] doctest version is "2.3.8"
[doctest] run with "--help" for options
===============================================================================
/home/jkt/work/cesnet/gerrit/CzechLight/velia/tests/sysrepo_system-ietfinterfaces.cpp:15:
TEST CASE: ietf-interfaces localhost
/home/jkt/work/cesnet/gerrit/CzechLight/velia/tests/sysrepo_system-ietfinterfaces.cpp:15: ERROR: test case THREW exception: Node already exists.