Messages in this thread | | | Date | Fri, 30 Jun 2023 13:51:25 +0200 | From | Stefan Agner <> | Subject | Re: [RFC PATCH] ipv6: add option to explicitly enable reachability test |
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Hi Eric,
On 2023-03-28 19:54, Eric Dumazet wrote: > On Tue, Mar 28, 2023 at 5:39 PM Stefan Agner <stefan@agner.ch> wrote: >> >> Systems which act as host as well as router might prefer the host >> behavior. Currently the kernel does not allow to use IPv6 forwarding >> globally and at the same time use route reachability probing. >> >> Add a compile time flag to enable route reachability probe in any >> case. >> >> Signed-off-by: Stefan Agner <stefan@agner.ch> >> --- >> My use case is a OpenThread device which at the same time can also act as a >> client communicating with Thread devices. Thread Border routers use the Route >> Information mechanism to publish routes with a lifetime of up to 1800s. If >> one of the Thread Border router goes offline, the lack of reachability probing >> currenlty leads to outages of up to 30 minutes. >> >> Not sure if the chosen method is acceptable. Maybe a runtime flag is preferred? > > I guess so. Because distros would have to choose a compile option. > > Not a new sysfs, only an IFLA_INET6_REACHABILITY_PROBE ? >
Wouldn't that be a per interface config? From what I can tell currently the reachability probing is disabled when IPv6 forwarding is enabled on a global level only. So I'd need something which disables that behavior on a global only as well.
-- Stefan
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