WTH is up with this network config?

jack craig jcraig at extraview.com
Wed Apr 28 23:15:40 UTC 2010


When I learned about ip address, the network & host portions of the IP 
and the netmask to
differentiate the host & network numbers. I learned a class A addr used
a mask of 10.255.255.255.

My current domain pre-existed my arrival.

While my FC11 works fine, I was looking at this network config and found 
the below!!!


eth0      Link encap:Ethernet  HWaddr 00:26:18:FE:75:91
           inet addr:10.0.0.100 Bcast:11.255.255.255  Mask:254.0.0.0
           inet6 addr: fe80::226:18ff:fefe:7591/64 Scope:Link
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
           RX packets:8291136 errors:0 dropped:0 overruns:0 frame:0
           TX packets:8464483 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:1000
           RX bytes:8084873362 (7.5 GiB)  TX bytes:8107599565 (7.5 GiB)
           Interrupt:35

cat ./devices/ifcfg-eth0
# Networking Interface
DEVICE=eth0
BOOTPROTO=static
DNS1=10.0.0.199
GATEWAY=10.0.0.129
HWADDR=00:26:18:FE:75:91
IPADDR=10.0.0.100
NETMASK=10.0.0.255
ONBOOT=yes

My question, if the ifcfg-eth0 has the right IP & Mask, why does the 
ifconfig display not agree?
More, why does it work as is ???!!!

tia, jackc...


-- 
Jack Craig
Software Engineer
831.461.7100 x120
www.extraview.com

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