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Re: Dealing with ICMPv6 network unreachable.



Roy Marples <roy%marples.name@localhost> writes:

>> Well, as discussed above, fixing it by not adding a default route if no
>> global addresses are available isn't a good solution either (and one I
>> have also considered).
>
> I can't think of a better way of fixing it though!
> And seeing as the current discussion isn't looking like any possible fix
> for this is possible in NetBSD I've made dhcpcd skip adding a default
> route for routers which advertise themselves as a router but without any
> global prefixes. I've also added an option to turn this off and have the
> original behavior.
>
> http://roy.marples.name/projects/dhcpcd/ci/6ead1d4962b514e8?sbs=0

I would say though that the router offering itself as a router (and
hence capable of forwarding packets) when it isn't connected (to the
global net) is wrong.   It would compete with a working router and
result in lack of delivery.

So your fix seems entirely reasonable.  It basically ignores RAs (or the
router part) from routers that offer no prefixes, which is likely mostly
the same set of sitautions as routers that can't forward.

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