nl_l3: also compare prefix length in duplicate route check#490
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When checking for duplicate routes, we also need to check the prefix lengths, else e.g. a route 10.0.0.0/8 will match with a 10.0.10.0/24 route. This can lead to routes falsely being identified as duplicates and not added or removed as expected. So switch from nl_addr_cmp_prefix() to nl_addr_cmp() to ensure that different prefix lengths will be treated as different routes. Fixes: 96e14a8 ("nl_l3: ignore duplicated link routes from FRR") Signed-off-by: Jonas Gorski <jonas.gorski@bisdn.de>
rubensfig
approved these changes
Jul 15, 2026
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When checking for duplicate routes, we also need to check the prefix lengths, else e.g. a route
10.0.0.0/8will match with a10.0.10.0/24route. This can lead to routes falsely being identified as duplicates and not added or removed as expected.So switch from
nl_addr_cmp_prefix()tonl_addr_cmp()to ensure that different prefix lengths will be treated as different routes.Fixes: 96e14a8 ("nl_l3: ignore duplicated link routes from FRR")