[CentOS] Problem with DHCP and default route in CentOS

Wed Aug 21 23:39:25 UTC 2013
Joshua J. Kugler <joshua at azariah.com>

Further investigation.

If I create a route-eth0 file and put this in it:

default dev eth0

I get this upon network restart:

Error: either "to" is duplicate, or "" is a garbage.

Which this page: 

says I will get if the default route is set via DHCP.  So, the system is 
seeing the default route, and apparently even trying to set it, but it's not 

I'm really lost on this one.


On Wednesday, August 21, 2013 13:48:02 Joshua J. Kugler wrote:
> I have a CentOS 6.4 VM that is getting its DHCP information from dnsmasq (a
> libvirt instance). However, it is not applying the routing information.
> Attached is a tcpdump of the dhcpc output. You'll see:
>             Default-Gateway Option 3, length 4:
> However, when I run 'route -n', I get:
> # route -n
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags Metric Ref    Use
> Iface   U     0      0       
> 0 eth0     U     1002   0      
>  0 eth0
> Any ideas as to why the default route/gateway information isn't being
> applied?
> j

Joshua J. Kugler - Fairbanks, Alaska
Azariah Enterprises - Programming and Website Design
joshua at azariah.com - Jabber: pedahzur at gmail.com
PGP Key: http://pgp.mit.edu/  ID 0x73B13B6A