Re: [Dnsmasq-discuss] Random IP address in the pool with dhcp-script?
On Fri, Aug 27, 2010 at 11:23 PM, Rance Hall ran...@gmail.com wrote: On Thu, Aug 26, 2010 at 7:11 AM, Benjamin Henrion b...@udev.org wrote: Hi, I am trying to figure out howto give a different IP address, preferably random, in a pool, by invoking the dhcp-script. Any idea how to do that? Best, -- Benjamin Henrion bhenrion at ffii.org Maybe I'm reading this wrong, but since the original assignment from the dhcp pool is reasonably random, and after than dnsmasq works very hard to offer the same IP address to the same machine based on mac address or hostname or some other network characteristic that is configurable. I'm taking your question to mean is there a way to force dnsmasq to give out DIFFERENT IP addresses even if we've processed this machine before. If this is what you want, then you might need to explain the problem you are trying to solve, because generally this is undesired behavior, at least it is on the networks I manage. The way I solved it was the following: 1. Create a series of dnsqmasq config files with a different subnet 2. KIllall dnsmads and start another dnsmasq to loop over them every 120sec 3. Redure the lease time to 2m A bit hackish, but it works. -- Benjamin Henrion bhenrion at ffii.org FFII Brussels - +32-484-566109 - +32-2-4148403 In July 2005, after several failed attempts to legalise software patents in Europe, the patent establishment changed its strategy. Instead of explicitly seeking to sanction the patentability of software, they are now seeking to create a central European patent court, which would establish and enforce patentability rules in their favor, without any possibility of correction by competing courts or democratically elected legislators.
Re: [Dnsmasq-discuss] Random IP address in the pool with dhcp-script?
On Sat, Aug 28, 2010 at 11:18:29AM +0200, Benjamin Henrion wrote: On Fri, Aug 27, 2010 at 11:23 PM, Rance Hall ran...@gmail.com wrote: On Thu, Aug 26, 2010 at 7:11 AM, Benjamin Henrion b...@udev.org wrote: Hi, I am trying to figure out howto give a different IP address, preferably random, in a pool, by invoking the dhcp-script. Any idea how to do that? Best, -- Benjamin Henrion bhenrion at ffii.org Maybe I'm reading this wrong, but since the original assignment from the dhcp pool is reasonably random, and after than dnsmasq works very hard to offer the same IP address to the same machine based on mac address or hostname or some other network characteristic that is configurable. I'm taking your question to mean is there a way to force dnsmasq to give out DIFFERENT IP addresses even if we've processed this machine before. If this is what you want, then you might need to explain the problem you are trying to solve, because generally this is undesired behavior, at least it is on the networks I manage. The way I solved it was the following: 1. Create a series of dnsqmasq config files with a different subnet 2. KIllall dnsmads and start another dnsmasq to loop over them every 120sec 3. Redure the lease time to 2m A bit hackish, but it works. This totally explains what you were trying to do, thanks for helping us helping you... -- Benjamin Henrion bhenrion at ffii.org FFII Brussels - +32-484-566109 - +32-2-4148403 In July 2005, after several failed attempts to legalise software patents in Europe, the patent establishment changed its strategy. Instead of explicitly seeking to sanction the patentability of software, they are now seeking to create a central European patent court, which would establish and enforce patentability rules in their favor, without any possibility of correction by competing courts or democratically elected legislators. ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
Re: [Dnsmasq-discuss] Random IP address in the pool with dhcp-script?
Benjamin Henrion wrote: Hi, I am trying to figure out howto give a different IP address, preferably random, in a pool, by invoking the dhcp-script. Any idea how to do that? It's not possible: information flows fomr dnsmasq to the dhcp-script, but not the other way. In fact the address is allocated long before the script is run. The addresses allocated by dnsmasq are fairly random anyway. If you can describe in more detail exactly what you are trying to achieve, we can probably make suggestions. Cheers, Simon.
Re: [Dnsmasq-discuss] Random IP address in the pool with dhcp-script?
On Thu, Aug 26, 2010 at 7:11 AM, Benjamin Henrion b...@udev.org wrote: Hi, I am trying to figure out howto give a different IP address, preferably random, in a pool, by invoking the dhcp-script. Any idea how to do that? Best, -- Benjamin Henrion bhenrion at ffii.org Maybe I'm reading this wrong, but since the original assignment from the dhcp pool is reasonably random, and after than dnsmasq works very hard to offer the same IP address to the same machine based on mac address or hostname or some other network characteristic that is configurable. I'm taking your question to mean is there a way to force dnsmasq to give out DIFFERENT IP addresses even if we've processed this machine before. If this is what you want, then you might need to explain the problem you are trying to solve, because generally this is undesired behavior, at least it is on the networks I manage. Rance
