Re: [Dnsmasq-discuss] unable to resolv hosts by name in my local network
Ok, this is true. But my question is different, i think. If in /etc/hosts are present my hosts, with expandhost option in my dnsmasq config, resolv by name work properly. But I don't want to specify anything in /etc/hosts. I think that dnsmasq, when one client get address, obtain all info (dhcp.leases) to permit itself and other clients to resolv by name the new client, is it true? LP On Thu, Dec 17, 2009 at 11:02 PM, Rance Hall ran...@gmail.com wrote: On Thu, Dec 17, 2009 at 3:51 PM, Luca Postregna luca.postre...@gmail.com wrote: Is there a way to resolv by name the hosts of my network without modify /etc/hosts on the server or in the client? On the server in dhcp.leased I can read that my client send the hostname, is not that enough? Thanks, Luca. -- http://www.infis.units.it/~lucapost/http://www.infis.units.it/%7Elucapost/ Luca Postregna The clients that get dhcp addresses should already be able to resolv by name the other dhcp clients. If this is not true, you have a problem and you need to fix that first. In order for the clients to resolv by name static ip machines, the server needs to know about them some way. typically this is with the /etc/hosts file, but IIRC dnsmasq has the ability to specify an additional/alternate /etc/hosts file. this other file needs to be a properly formatted /etc/hosts file, it can just have another name. This should get your clients resolving the network correctly. The next thing you need to know about is if you want the dhcp server to resolv local names the same way the clients do. There is a way to configure this also. specify in your servers /etc/resolv.conf that the server should look at itself for name resolution, and then specify a second proper /etc/resolv.conf file for dnsmasq to use to get the rest of the net. ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss -- http://www.infis.units.it/~lucapost/ Luca Postregna
Re: [Dnsmasq-discuss] unable to resolv hosts by name in my local network
On Fri, Dec 18, 2009 at 3:31 AM, Luca Postregna luca.postre...@gmail.com wrote: Ok, this is true. But my question is different, i think. If in /etc/hosts are present my hosts, with expandhost option in my dnsmasq config, resolv by name work properly. But I don't want to specify anything in /etc/hosts. I think that dnsmasq, when one client get address, obtain all info (dhcp.leases) to permit itself and other clients to resolv by name the new client, is it true? LP snip This is almost always true for cases when all clients that need to resolv each others names are provided by the dhcp server. You don't have to modify /etc/hosts if dhcp clients are all you have. There are some common things that interfere with this basic status. 1) Some OSes (usually unix based) ship needing dhclient to be configured to send a hostname with the dhcp request. Windows does this by default, but with *nix this is a configurable option. NOT sending the hostname with the dhcp request will cause name resolution to fail for just these hosts. 2) Its possible (though I've only seen it happen once in my several years of using dnsmasq) to get a corrupted dhcp.leases file. If this file is hosed then name resolution of dhcp clients can be broken depending on the specific way the leases file gets hosed. 3) the wrong authoritative setting in dnsmasq.conf or another dhcp server somewhere on your net that also thinks its authoritative. There might be other off the wall things as well. I refer you to my previous post, the behavior you desire is in my view, default. If you don't get it, there is something broken. But you need to do a better job of explaining what broken looks like for you so we can help you figure out what to do about it.
[Dnsmasq-discuss] unable to resolv hosts by name in my local network
Is there a way to resolv by name the hosts of my network without modify /etc/hosts on the server or in the client? On the server in dhcp.leased I can read that my client send the hostname, is not that enough? Thanks, Luca. -- http://www.infis.units.it/~lucapost/ Luca Postregna
Re: [Dnsmasq-discuss] unable to resolv hosts by name in my local network
On Thu, Dec 17, 2009 at 3:51 PM, Luca Postregna luca.postre...@gmail.com wrote: Is there a way to resolv by name the hosts of my network without modify /etc/hosts on the server or in the client? On the server in dhcp.leased I can read that my client send the hostname, is not that enough? Thanks, Luca. -- http://www.infis.units.it/~lucapost/ Luca Postregna The clients that get dhcp addresses should already be able to resolv by name the other dhcp clients. If this is not true, you have a problem and you need to fix that first. In order for the clients to resolv by name static ip machines, the server needs to know about them some way. typically this is with the /etc/hosts file, but IIRC dnsmasq has the ability to specify an additional/alternate /etc/hosts file. this other file needs to be a properly formatted /etc/hosts file, it can just have another name. This should get your clients resolving the network correctly. The next thing you need to know about is if you want the dhcp server to resolv local names the same way the clients do. There is a way to configure this also. specify in your servers /etc/resolv.conf that the server should look at itself for name resolution, and then specify a second proper /etc/resolv.conf file for dnsmasq to use to get the rest of the net.
