When there are multiple advertisers/paths to reach
Intra-Prefix route, if any path is removed,
re-added back, it does add to the same route node.
ospf6 intra prefix, first stored in oa->route_table
then as part of add cb, it would add to ospf6->route_table
which adds to FIB.
When copying a route with its paths & NHs from oa->table to
ospf6->table the path origin should not be modified otherwise
ospf6->table would not find existing node rather it appends
new node.
Use spf_table to fetch nexthops for a given advertisers/path,
to form effective nexthop list for a route.
Ticket:CM-16139
Testing Done:
R2 ---- R3
| |
R1 ---- R4
Inject Intra Ara Prefix LSA from R1 & R3, validate R2 and R4
having two origination point/paths to reach for a route.
Trigger link flap, frr restart or remove/readd R3's INP one of the
injection point.
Remove link between R4 to R1 and validate R3 carrying single
path to reach prefix.
Signed-off-by: Chirag Shah <chirag@cumulusnetworks.com>
FRRouting is free software that implements and manages various IPv4 and IPv6
routing protocols.
Currently FRRouting supports BGP4, BGP4+, OSPFv2, OSPFv3, RIPv1, RIPv2, RIPng,
IS-IS, PIM-SM/MSDP, LDP and Babel as well as very early support for EIGRP and
NHRP.
See the file REPORTING-BUGS to report bugs.
See COMMUNITY.md for information on contributing.
Free RRRouting is free software. See the file COPYING for copying conditions.
Public email discussion can be found at https://lists.frrouting.org/listinfo
Our public slack channel is at https://frrouting.slack.com
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