On Sat, Jul 18, 2026 at 07:23:25AM +0900, Yuyang Huang wrote: > When the kernel deletes an IPv6 route on its own, the RTM_DELROUTE > notification does not say why. User space cannot tell a route that > expired from one the router explicitly withdrew, yet the two call for > different reactions: an expired RA route means the router failed to > refresh it in time, which points at a misconfigured or unreliable > router and may warrant action such as disabling IPv6 on that network, > while a zero-lifetime withdrawal is normal, RFC-compliant operation.
Please expand more on the motivation: Which user space application is going to consume this information and what is it going to do with it? Also, Sashiko has some valid comments. Please take a look.
