Re: [lwip-users] Wrong interface when released DHCP-interface available

[Leon Woestenberg]

Hello Robert,

Jelinek Robert ETR.ETE3 wrote:

> I am using lwip with two interfaces: the first one is the ethernet interface, 
> the second one is the loopback interface.
>
> If the ethernet interface is not initialized by DHCP (at the startup of my 
> hardware) oder DHCP releases it bindings, the IP-Netmask is set to 0.0.0.0. 
> Then I get a problem: Every traffic to the loopback interface is feed into the 
> ethernet interface, because ip_addr_maskcmp inside of ip_route always returns 
> true for the ethernet interface in that case. (it works, if I use 
> 255.255.255.255 for the netmask at the bootup, but it does not solve the 
> problem in coorperation with dhcp_release.
>  
Could you please be more specific and propose a patch for maskcmp (which 
is now called ip_addr_netcmp() BTW).

I have too little time to look over this, your help would be very 
appreciated.

With kind regards,

Leon Woestenberg