linux-oem 4.15.0-1097.107 ADT test failure with linux-oem 4.15.0-1097.107

[Kelsey Steele]

Testing failed on:
    amd64: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-bionic/bionic/amd64/l/linux-oem/20200917_024821_f018f@/log.gz

02:04:01 DEBUG| [stdout] selftests: rtnetlink.sh
02:04:01 DEBUG| [stdout] ========================================
02:04:01 DEBUG| [stdout] PASS: policy routing
02:04:01 DEBUG| [stdout] PASS: route get
02:04:06 DEBUG| [stdout] PASS: preferred_lft addresses have expired
02:04:06 DEBUG| [stdout] PASS: tc htb hierarchy
02:04:06 DEBUG| [stdout] PASS: gre tunnel endpoint
02:04:06 DEBUG| [stdout] PASS: bridge setup
02:04:08 DEBUG| [stdout] PASS: ipv6 addrlabel
02:04:08 DEBUG| [stdout] PASS: set ifalias d78a4e6e-399a-48fd-90f7-4e3b7a095c6a for test-dummy0
02:04:08 DEBUG| [stdout] PASS: vrf
02:04:09 DEBUG| [stdout] PASS: vxlan
02:04:09 DEBUG| [stdout] FAIL: can't add fou port 7777, skipping test
02:04:09 DEBUG| [stdout] PASS: macsec
02:04:09 DEBUG| [stdout] not ok 1..10 selftests: rtnetlink.sh [FAIL]
02:04:09 DEBUG| [stdout] make[1]: Leaving directory '/tmp/autopkgtest.8CYYaI/build.hsO/src/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/net'
02:04:09 DEBUG| [stdout] make: Leaving directory '/tmp/autopkgtest.8CYYaI/build.hsO/src/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests'