This is the user-space counterpart of https://issues.redhat.com/browse/RHEL-111004, needed to really deploy the feature.

The list of relevant commit (courtesy of Laurent Vivier) is:

1c79ab6937ae virtio-net: Advertise UDP tunnel GSO support by default
a5289563ad74 net: implement UDP tunnel features offloading
fffac046282c net: implement tunnel probing
3a7741c3bdc3 virtio-net: implement extended features support
d55ad8c9a9a5 vhost-net: implement extended features support
f412c1f57ab5 vhost-backend: implement extended features support
a76f5b795cab qmp: update virtio features map to support extended features
9f979ef0e01a vhost: add support for negotiating extended features
712c79d6d374 virtio-pci: implement support for extended features
64a6a336f42b virtio: add support for negotiating extended features
0a49a9743327 virtio: serialize extended features state
b15a61fdae97 virtio: introduce extended features type
8de6cd5452eb linux-headers: Update to Linux v6.17-rc1
c3d9dcd87f0d linux-headers: deal with counted_by annotation
e5fd02d8253a net: bundle all offloads in a single struct