[lug] An odd networking question

Kenneth D Weinert kenw at quarter-flash.com
Sat Oct 17 10:01:25 MDT 2009


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Patrick Mullen wrote:
> The output from /sbin/route would also be useful.

kenw at fortytwo:~$ /sbin/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
192.168.1.0     *               255.255.255.0   U     2      0        0
wlan0
link-local      *               255.255.0.0     U     1000   0        0 eth0
default         192.168.1.1     0.0.0.0         UG    0      0        0
wlan0
default         192.168.1.1     0.0.0.0         UG    100    0        0 eth0


> 
>> but when I rebooted with the wireless off, my resolv.conf remains empty.
>>
>> Turn on the wireless, it gets populated.
> 
> Is eth0 configured to start on boot?  Is it set to use DHCP?  Is there
> a DHCP server on that network?

Yes, eth0 starts on boot, is static (wireless is DHCP and there is a server)

(from /etc/network/interfaces)

iface eth0 inet static
    address 192.168.1.10
    netmask 255.255.255.0
    gateway 192.168.1.1


> 
> Does your DHCP server tell your clients (your laptop) what default
> gateway to use?
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