This is the cover letter and provides a brief overview of the change.
Add a Netlink rtm_flag, RTM_F_RA_ROUTER for the RTM_NEWROUTE message. This allows an IPv6 Netlink client to indicate the default route came from an RA. This results in the kernel creating individual default routes, rather than coalescing multiple default routes into a single ECMP route.
This change also needs to be reflected in the man7/rtnetlink.7 page. Below is the one-line addition to the man-pages git repo (https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git):
diff --git a/man/man7/rtnetlink.7 b/man/man7/rtnetlink.7 index 86ed459bb..07c4ef0a8 100644 --- a/man/man7/rtnetlink.7 +++ b/man/man7/rtnetlink.7 @@ -295,6 +295,7 @@ if the route changes, notify the user via rtnetlink T} RTM_F_CLONED:route is cloned from another route RTM_F_EQUALIZE:a multipath equalizer (not yet implemented) +RTM_F_RA_ROUTER: the route is a default route from an RA .TE .IP .I rtm_table
Signed-off-by: Matt Muggeridge Matt.Muggeridge@hpe.com Cc: David Ahern dsahern@kernel.org Cc: David S. Miller davem@davemloft.net Cc: linux-api@vger.kernel.org Cc: stable@vger.kernel.org
Matt Muggeridge (1): net/ipv6: Netlink flag for new IPv6 Default Routes
include/uapi/linux/rtnetlink.h | 9 +++++---- net/ipv6/route.c | 3 +++ 2 files changed, 8 insertions(+), 4 deletions(-)
base-commit: 5ccdcdf186aec6b9111845fd37e1757e9b413e2f