[Dnsmasq-discuss] Problems With Windows Vista
Jeremy M
jeruhme at gmail.com
Mon Jan 25 05:00:07 GMT 2010
What will the broadcast address in the --dhcp-range configuration affect if
not broadcast replies?
On Sun, Jan 24, 2010 at 3:39 AM, Simon Kelley <simon at thekelleys.org.uk>wrote:
> Jeremy M wrote:
>
>> You were exactly right. The firewall was blocking outbound broadcast
>> packets on the subnet. I'm not sure if this is correct, but my config
>> specifies:
>>
>>
>> dhcp-range=wireless,192.168.3.50,192.168.3.250,255.255.255.0,192.168.3.255,12h
>>
>> I think that's saying the broadcast address should be 192.168.3.255, but
>> broadcasts attempts are actually going out on 255.255.255.255.
>>
>>
>>
> 255.255.255.255 is always a valid broadcast address on IP networks, and the
> correct one to use for DHCP.
>
> 255.255.255.255 = limited broadcast address, propogates only on one network
> segment.
>
> 192.168.3.255 = network broadcast address. May be routed to other network
> segments be suitably configured routers.
>
> I'm glad that's fixed. Probably worth a FAQ entry!
>
> Cheers,
>
> Simon.
>
>
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