[CentOS] default gw route has gone?

Wed Jan 15 22:28:43 UTC 2014
Rob Kampen <rkampen at kampensonline.com>

Weird behaviour.
A couple of days ago I installed another DSL router.
During the process I have somehow caused the default gw route to 
disappear - on system start up the interface comes up fine, I can see 
and connect to the local subnet but not to the internet.

[rkampen at timsws network-scripts]$ route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use 
Iface
192.168.1.0     *               255.255.255.0   U 0      0        0 eth0
link-local      *               255.255.0.0     U 1002   0        0 eth0

is what I get at startup.
I need to add

sudo route add default gw 192.168.1.1

to get things working properly.
[rkampen at timsws network-scripts]$ route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use 
Iface
192.168.1.0     *               255.255.255.0   U 0      0        0 eth0
link-local      *               255.255.0.0     U 1002   0        0 eth0
default         192.168.1.1     0.0.0.0         UG 0      0        0 eth0

Google shows me a number of responses that all tell me to add a line to 
/etc/sysconfig/network
which I already had.

[rkampen at timsws network-scripts]$ cat /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=timsws
GATEWAY=192.168.1.1

and
[rkampen at timsws network-scripts]$ cat 
/etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE="eth0"
NM_CONTROLLED="yes"
ONBOOT=yes
TYPE=Ethernet
BOOTPROTO=dhcp
DEFROUTE=no
IPV4_FAILURE_FATAL=yes
IPV6INIT=no
NAME="System eth0"
UUID=5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03
HWADDR=00:24:8C:80:0B:15
PEERDNS=yes
PEERROUTES=yes
LAST_CONNECT=1389583930

So what am I missing?
BTW - all other devices are working just fine - just my main CentOS 6.5 
WS fails.
TIA