CSIT tests related to unnumbered ifc config started to fail:
https://logs.fd.io/production/vex-yul-rot-jenkins-1/hc2vpp-csit-integration-master-ubuntu1604/2173/archives/log.html.gz
Might be related to:
https://gerrit.fd.io/r/#/c/12632/
and/or:
https://gerrit.fd.io/r/#/c/12646/