Re: default route problem

[Dan Williams <dcbw redhat com>]

On Tue, 2008-11-25 at 14:21 +0000, Roy Marples wrote:
> On Mon, 2008-11-13 at 11:44 -0500, Dan Williams wrote:
> >ifconfig eth0 192.168.1.30/32 up
> >/sbin/ip route add default dev eth0 via 192.168.1.1
> 
> OK, I have this working now in dhcpcd now :)
> It was working in 3.2.3, but broken in 4.0 which had me confused.
> 
> We can then do this
> ip a a 1.2.3.4/32 dev eth0
> ip r a 10.255.255.1/32 dev eth0
> ip r a default via 10.255.255.1 dev eth0
> 
> A real world example is 1&1 internet servers which have a DHCP server
> setup which gives us this.
> ip address = 1.2.3.4
> netmask = 255.255.255.255
> broadcast = 1.2.3.4
> static route = 10.255.255.1/10.255.255.1
> routers = 10.255.255.1

I'm pretty sure I ended up fixing this in NM about two weeks ago, and it
seems to work in the testing I've been able to do.  One of the key
points was the scope of the host route that gets added to the router.
If there's any other client-side stuff that needs to be done I'd love to
hear about it.

Dan

> The code that handles netlink, adding and deleting addresses and routes
> fully working with the above can be found here. 
> http://roy.marples.name/projects/dhcpcd/browser/trunk/if-linux.c?rev=1097
> lines 359-426 are pertinant to this discussion.
> 
> Of the whole file, only about 300 lines of it are needed just for
> address and route management. Matching code for all the BSDs can be
> found in if-bsd.c. The API is quite simple and could probably be adapted
> for NM if there is interest - however the code is BSD licensed.
> 
> Thanks
> 
> Roy