[Dnsmasq-discuss] strange warn message

e9hack e9hack at gmail.com
Sat Aug 18 07:26:56 BST 2012


Hi,

I've a configuration where the host file contains two ipv6 entries for a host (self
created ipv6 from ULA prefix and a DHCP ipv6):

192.168.25:2 vbox
fdaa:aaaa:aaaa:aaaa:bbbb:bbbb:bbbb:bbbb vbox
fec0:0:0:ffff::ffff:2 vbox
...

The configuration file contains the DHCPv6 entry also:

local=/lan/
domain=lan
dhcp-range=192.168.25.100,192.168.25.150,48h
dhcp-host=aa:aa:aa:bb:bb:bb,vbox,192.168.25.2
dhcp-range=fec0:0:0:ffff::ffff:100,fec0:0:0:ffff::ffff:ffff,48h
dhcp-host=id:cc:cc:cc:cc:cc:cc:cc:cc:cc:cc:cc:cc:cc:cc,vbox,[fec0:0:0:ffff::ffff:2]
...

All the time, where a PC ask for a lease, I get the following entry in the log:

Aug 18 08:05:27 WLAN daemon.info dnsmasq-dhcp[27370]: DHCPDISCOVER(br0) dd:dd:dd:dd:dd:dd
Aug 18 08:05:27 WLAN daemon.info dnsmasq-dhcp[27370]: DHCPOFFER(br0) 192.168.25.6
dd:dd:dd:dd:dd:dd
Aug 18 08:05:27 WLAN daemon.info dnsmasq-dhcp[27370]: DHCPREQUEST(br0) 192.168.25.6
dd:dd:dd:dd:dd:dd
Aug 18 08:05:27 WLAN daemon.info dnsmasq-dhcp[27370]: DHCPACK(br0) 192.168.25.6
dd:dd:dd:dd:dd:dd vdr
Aug 18 08:05:27 WLAN daemon.warn dnsmasq-dhcp[27370]: not giving name vbox.lan to the DHCP
lease of fec0::ffff:0:0:ffff:2 because the name exists in /var/hosts with address
fdaa:aaaa:aaaa:aaaa:bbbb:bbbb:bbbb:bbbb
Aug 18 08:05:27 WLAN daemon.warn dnsmasq-dhcp[27370]: not giving name vbox to the DHCP
lease of fec0::ffff:0:0:ffff:2 because the name exists in /var/hosts with address
fdaa:aaaa:aaaa:aaaa:bbbb:bbbb:bbbb:bbbb

dnsmasq complains about all hosts with more than one ipv6 address in the host file. The
error message is shown for all DHCP queries from different PC's. dnsmasq gives the PC vbox
the correct ipv6 address over DHCP.

C:\Users\zz>nslookup vbox
Server:  WLAN.lan
Address:  192.168.25.1

Name:    vbox.lan
Addresses:  fdaa:aaaa:aaaa:aaaa:bbbb:bbbb:bbbb:bbbb
          fec0::ffff:0:0:ffff:2
          192.168.25.2

Regards,
Hartmut



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