Comment 0 for bug 1895258

Issue found on X 4.15.0-1054.58 Oracle.

The rtnetlink.sh failed with:
 selftests: rtnetlink.sh
 ========================================
 PASS: policy routing
 PASS: route get
 PASS: preferred_lft addresses have expired
 PASS: tc htb hierarchy
 PASS: gre tunnel endpoint
 PASS: bridge setup
 PASS: ipv6 addrlabel
 PASS: set ifalias e1dfde61-e5a7-415f-8bd9-924e9796038f for test-dummy0
 PASS: vrf
 PASS: vxlan
 SKIP: fou: iproute2 too old
 SKIP: macsec: iproute2 too old
 not ok 1..10 selftests: rtnetlink.sh [FAIL]

Look into the code, it's the kci_test_encap_fou() test:

      ip fou help 2>&1 |grep -q 'Usage: ip fou'
      if [ $? -ne 0 ];then
            echo "SKIP: fou: iproute2 too old"
            return 1
      fi

The return code is 1, thus causing this failure.