I found the upstream commit which points to the RH-Bug:
commit 77de91e5a8b1c1993ae65c54b37e0411e78e6fe6 core: don't fight with the kernel over the default IPv6 route
[1] http://cgit.freedesktop.org/NetworkManager/NetworkManager/commit/?id=77de91e5a8b1c1993ae65c54b37e0411e78e6fe6
I found the upstream commit which points to the RH-Bug:
commit 77de91e5a8b1c19 93ae65c54b37e04 11e78e6fe6
core: don't fight with the kernel over the default IPv6 route
[1] http:// cgit.freedeskto p.org/NetworkMa nager/NetworkMa nager/commit/ ?id=77de91e5a8b 1c1993ae65c54b3 7e0411e78e6fe6