[Dnsmasq-discuss] No dynamic addresses to unknown hosts

[Simon Kelley]

ms at webstollen.de wrote:
> Hi,
> 
> when I try to get a dynamic IP address via DHCP, dnsmasq outputs "no 
> address available" (see below). When I do the same from a machine whose 
> MAC address is registered in dnsmasq.conf, then dnsmasq can give me an 
> IP address (see below). I'm using virtual VLAN interfaces eth0.3, eth0.4 
> and eth0.6, but I think that's not the problem because dnsmasq receives 
> DHCPDISCOVER requests on these interfaces. So, how can I manage sending 
> IP addresses to unregistered hosts?
> 
> You can see `dnsmasq -d` and dnsmasq.conf below:
> 
> root at slug:/etc$ dnsmasq -d
> dnsmasq: started, version 2.38 cachesize 150
> dnsmasq: compile time options: IPv6 GNU-getopt no-ISC-leasefile no-DBus 
> no-I18N TFTP
> dnsmasq: DHCP, IP range 192.168.6.101 -- 192.168.6.200, lease time 1d
> dnsmasq: DHCP, IP range 192.168.4.101 -- 192.168.4.200, lease time 1d
> dnsmasq: DHCP, IP range 192.168.3.101 -- 192.168.3.200, lease time 1d
> dnsmasq: reading /etc/resolv.conf
> dnsmasq: using nameserver 192.168.4.2#53
> dnsmasq: read /etc/hosts - 6 addresses
> dnsmasq: DHCPDISCOVER(eth0.4) 169.254.250.46 00:21:86:60:30:13 no 
> address available
> dnsmasq: DHCPDISCOVER(eth0.4) 169.254.250.46 00:21:86:60:30:13 no 
> address available
> dnsmasq: DHCPDISCOVER(eth0.4) 169.254.250.46 00:21:86:60:30:13 no 
> address available
> dnsmasq: DHCPDISCOVER(eth0.4) 169.254.250.46 00:21:86:60:30:13 no 
> address available
> dnsmasq: DHCPREQUEST(eth0.4) 192.168.4.134 00:19:99:52:c5:e0
> dnsmasq: DHCPACK(eth0.4) 192.168.4.134 00:19:99:52:c5:e0 ms.webstollen.de
> 
> root at slug:/etc$ cat dnsmasq.conf
> domain-needed
> bogus-priv
> filterwin2k
> 
> listen-address=192.168.3.1
> listen-address=192.168.4.1
> listen-address=192.168.6.1
> 
> # IP-Adressvergabe
> dhcp-range=net:meeting,192.168.3.101,192.168.3.200,24h
> dhcp-range=net:webstollen,192.168.4.101,192.168.4.200,24h
> dhcp-range=net:dockland,192.168.6.101,192.168.6.200,24h
> 
These say "only use the range only when the tag (webstollen, meeting, 
dockland) is set. There's no range available for use when none of the 
those three tags are set.

Since an unknown host will not set those tags, there is no available 
range and therefore no available address.


> # Host-Namen zu MAC-Adressen zuordnen
> dhcp-host=00:19:99:4E:5A:5D,net:webstollen,s.webstollen.de
> dhcp-host=00:18:F3:2A:A5:6A,net:webstollen,b.webstollen.de
> dhcp-host=00:17:31:67:BA:9E,net:webstollen,b.webstollen.de
> dhcp-host=00:10:DC:AA:F8:51,net:webstollen,s1.webstollen.de
> dhcp-host=00:19:99:52:C5:E0,net:webstollen,ms.webstollen.de
> dhcp-host=00:12:3F:A3:97:55,net:webstollen,s2.webstollen.de
> dhcp-host=11:22:33:44:55:66,net:webstollen,s3.webstollen.de
> 
> # Sub-Netzmasken
> dhcp-option=meeting,1,255.255.255.0
> dhcp-option=webstollen,1,255.255.255.0
> dhcp-option=dockland,1,255.255.255.0
> 
> # Default Router
> dhcp-option=meeting,3,192.168.3.1
> dhcp-option=webstollen,3,192.168.4.1
> dhcp-option=dockland,3,192.168.6.1
> 
> # DNS Servers
> dhcp-option=meeting,6,192.168.3.1
> dhcp-option=webstollen,6,192.168.4.1
> 
> # Domains
> dhcp-option=webstollen,15,webstollen.de
> dhcp-option=meeting,15,meeting.lan
> 
> # Verschiedene Einstellungen
> dhcp-option=webstollen,19,0
> dhcp-option=webstollen,44,192.168.4.10
> dhcp-option=webstollen,45,192.168.4.10
> dhcp-option=webstollen,46,8
> dhcp-option=webstollen,47
> 
> 
> Greetings,
> Manfred

Which address range do you want unknown clients to be allocated too?


Cheers,

Simon.