Comment 5 for bug 1812978

Passed on Eoan (5.3.0-48.41):
 # selftests: net: rtnetlink.sh
 # PASS: policy routing
 # PASS: route get
 # PASS: preferred_lft addresses have expired
 # PASS: promote_secondaries complete
 # PASS: tc htb hierarchy
 # PASS: gre tunnel endpoint
 # PASS: gretap
 # PASS: ip6gretap
 # PASS: erspan
 # PASS: ip6erspan
 # PASS: bridge setup
 # PASS: ipv6 addrlabel
 # PASS: set ifalias 268cc6ee-d755-450a-bf54-432633518347 for test-dummy0
 # PASS: vrf
 # PASS: vxlan
 # FAIL: can't add fou port 7777, skipping test
 # PASS: macsec
 # PASS: ipsec
 # PASS: ipsec_offload
 # SKIP: fdb get tests: iproute2 too old
 # SKIP: fdb get tests: iproute2 too old
 ok 11 selftests: net: rtnetlink.sh