[OpenWrt-Devel] [PATCH netifd 2/6] iprule: Insert network and address ip rules before main table lookup rule

[Hans Dedecker]

On Wed, Sep 23, 2015 at 11:44 PM, Kristian Evensen <
kristian.evensen at gmail.com> wrote:

> On Wed, Sep 23, 2015 at 1:23 PM, Kristian Evensen
> <kristian.evensen at gmail.com> wrote:
> > On Wed, Sep 23, 2015 at 1:07 PM, Hans Dedecker <dedeckeh at gmail.com>
> wrote:
> >> Indeed we're using source based routing in combination with a default
> route
> >> in the main routing table; even the specific routing table(s) can
> contain a
> >> default route
> >> Based on the addr rule the traffic is guided to a specific routing
> table so
> >> it leaves on the correct interface
>
> I should point out that I don't know what the "correct" behavior and
> how (if) this should be solved. But these patches do break earlier
> working use-cases, so I am not sure what the OpenWRT-policy on this
> is.
>
Intention of the patches was to support more scenarios like a default route
in the main table.
As the patches currently break some other scenarios it will need some
further tweaking.
The main issue is the nw rule; therefore I would like to understand which
scenario the nw rule is covering before just reverting to the "old" nw rule
implementation.
If no route is hit in the main routing table the traffic will also be
returned on the wan interface in case of the "old" nw rule implementation;
so i'm wondering if this rule is ever hit in a scenario
The iif lo rule stuff was originally added to fix a kernel issue; but since
it's used in other scenarios they can be re-added again after the main
table lookup .
Meanwhile I will do some further tweaking and testing with the different
scenarios in mind.

Hans

>
> -Kristian
>
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