dcbw merge the patch long ago, there just wasn't a follow-up email on
the list:
master: https://cgit.freedesktop.org/NetworkManager/NetworkManager/commit/?id=0c5aa6e48b713a5626c20303c683f7d96ee13184
nm-1-6: (same as master)
nm-1-4: https://cgit.freedesktop.org/NetworkManager/NetworkManager/commit/?id=28cd59a016382fb18af783544f85284ffbfdc178
nm-1-2: https://cgit.freedesktop.org/NetworkManager/NetworkManager/commit/?id=3b225f893ef036bf6c39389769a2c4e996a17b58
Thomas