[ipxe-devel] Curious routing problem with iPXE

[Lee Bradshaw]

Hi,

I've now set up a native Windows iSCSI server and am booting from it. All is
working fine, except that the routing to the server is odd. My PC is .244;
the server is .2. When I list the routing table I get:

IPv4 Route Table
===========================================================================
Active Routes:
Network Destination        Netmask          Gateway       Interface  Metric
          0.0.0.0          0.0.0.0       10.10.10.1     10.10.10.244    266
       10.10.10.0    255.255.255.0         On-link      10.10.10.244    266
       10.10.10.2  255.255.255.255       10.10.10.1     10.10.10.244    266
...

You will notice the curious route to the server via a gateway at 10.10.10.1.
This seems to be caused by iPXE not correctly processing the subnet from
DHCP, which was 255.255.255.0. I know this is what it read from the DHCP
server because it says so during the boot.

Windows then inherits the routing iPXE used - and Windows is very, very
touchy about anything that affects the route to the system disk; I can't
change these entries.

In many installations this wouldn't be a problem - although it's an
unnecessary overhead - but in my case the gateway at 10.10.10.1 is on a
100Mb connection to the switch, whereas the rest of the network is 1000Mb.
As you can imagine, this means the performance of my disks is not what it
should be.

I've been able to work around it by adding a static route (DHCP 249) to
override the errant entry, but it would be nice if I didn't have to do this.
Any ideas?

Thanks,
Lee.