The affected suites are ethip4ipsec1000tnlsw-fixtnlip-ip4base-policy-flow-dir-aes256gcm and ethip4ipsec1000tnlsw-fixtnlip-ip4base-policy-flow-rss-aes256gcm, both failing [0] due to retval -1 from flow_enable API call, which means VNET_FLOW_ERROR_NOT_SUPPORTED.

I bet only new-ish Intel NICs support such hardware flows, but we should confirm that before deleting those tests from jobspecs.

Note that similarly named suites such as ethip4ipsec10000tnlsw-ip4base-policy-flow-cache-aes256gcm do not actually rely on hardware flows, so they are passing also on Mellanox NICs.

[0] https://s3-logs.fd.io/vex-yul-rot-jenkins-1/csit-vpp-perf-report-coverage-2410-3na-spr/33/log.html.gz#s1-s1-s1-s1-s2-t1-k2-k9