[Dnsmasq-discuss] New setup. DNS OK, DHCP is silent

[Lovelady, Dennis E.]

> Dennis Lovelady
>
>
>You're not using the configuration you think you are. If dnsmasq was reading a configuration with dhcp-range in >it, it would log that fact at start-up. This is also consistent with dnsmasq not listening on port 67. 
>  Maybe a command-line option is sending dnsmasq to a different config-file?
>
>
>Cheers,
>
>Simon,

You are correct, Simon.  We're a step closer.

This strange (to me) setup (on an NAS device, embedded Linux) often (but not always) uses /opt/etc/... for configuration data and so on, and it's burned me before.  (The great thing about standards: there are so many from which to choose!)  I think they just want to mess with my head.  I should learn!

Anyway, I have now set a link:
    rm /opt/etc/dnsmasq.conf
    ln -fs /etc/dnsmasq.conf /opt/etc

and it now reports that it's listending for DHCP requests.  Yeah.  But still no joy.

netstat output is improved:

netstat -anp|grep dnsmasq
tcp        0      0 0.0.0.0:53                  0.0.0.0:*                   LISTEN      9915/dnsmasq     
udp        0      0 0.0.0.0:53                  0.0.0.0:*                               9915/dnsmasq     
udp        0      0 0.0.0.0:67                  0.0.0.0:*                               9915/dnsmasq     
unix  2      [ ]         DGRAM                    40072  9915/dnsmasq

Now listening on port 67.

But DHCP requests are still not honored.  

Here's the startup now:

Nov 24 13:47:06 stora-2 dnsmasq[11000]: started, version 2.62 cachesize 150
Nov 24 13:47:06 stora-2 dnsmasq[11000]: compile time options: IPv6 GNU-getopt no-DBus no-i18n no-IDN DHCP DHCPv6 no-Lua TFTP no-conntrack
Nov 24 13:47:06 stora-2 dnsmasq-dhcp[11000]: DHCP, IP range 192.168.158.64 -- 192.168.158.191, lease time 1d
Nov 24 13:47:06 stora-2 dnsmasq[11000]: reading /etc/resolv.conf
Nov 24 13:47:06 stora-2 dnsmasq[11000]: using nameserver 192.168.158.1#53
Nov 24 13:47:06 stora-2 dnsmasq[11000]: ignoring nameserver 127.0.0.1 - local interface
Nov 24 13:47:06 stora-2 dnsmasq[11000]: read /etc/hosts - 2 addresses


Here's my tcpdump output, run on that very server.

tcpdump -ni eth0 'udp port 67 and udp port 68'
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 68 bytes
13:38:49.076695 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request [|bootp]
13:39:08.078646 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request [|bootp]
13:39:27.078484 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request [|bootp]
13:40:02.078788 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request [|bootp]
13:40:09.078597 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request [|bootp]
13:40:20.078097 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request [|bootp]
13:40:27.078534 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request [|bootp]

7 packets captured
8 packets received by filter
0 packets dropped by kernel

I can promise that iptables is not running... what else might stand in the way?

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