[OpenWrt-Devel] Routes disappearing when ip "ip link set down ethX" and bring it up again

[Philip Prindeville]

> 
> 
>> On May 1, 2020, at 2:08 AM, Hans Dedecker <dedeckeh at gmail.com> wrote:
>> 
>> 
>> On Thu, Apr 30, 2020 at 9:32 PM Philip Prindeville <philipp_subx at redfish-solutions.com> wrote:
>> Hi all,
>> 
>> I noticed that if eth5 is my “wan” interface and I do:
>> 
>> # ip link set down dev eth5
>> 
>> make some firewall changes, then do:
>> 
>> # ip link set up dev eth5
>> 
>> then my routes don’t get repopulated. 
>> 
>> I thought that procd installed triggers so that if an interface flaps, then a helper would run (in this case the network helper).
> 
> Netifd is responsible for management of IP routes/addresses; so if a link is forced down by an external command netifd will not be aware and will not re-install IP routes/addresses
> You can easily bring down an interface by using ifdown which is handled by netifd


Okay, I figured that netifd listened for NETLINK messages about the interfaces changing state…

-Philip


> 
>> 
>> 
>> Hans
>> 
>> Is this not happening?
>> 
>> Thanks,
>> 
>> -Philip
>> 
> 

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