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<p>Hello,</p>
<p>I've never setup a dhcp server before and I've been struggling
with the below issues for several days. While I did find two
solutions that worked for others, they didn't work for me.
Hopefully someone here can tell me how & where I'm messing
things up. <br>
</p>
<p>As you can see from the below output, I'm getting "No subnet
declaration" and also "Can't open /var/lib/dhcp/dhcpd.leases for
append". Perhaps they're related?<br>
</p>
<p>Thank you in advance for any solutions and/or helpful
suggestions!</p>
<p>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br>
</p>
<p>ubuntu 16.04</p>
root@yellow:~# dhcpd -d -user dhcpd -group dhcpd<br>
<p>Internet Systems Consortium DHCP Server 4.3.3<br>
Copyright 2004-2015 Internet Systems Consortium.<br>
All rights reserved.<br>
For info, please visit <a class="moz-txt-link-freetext"
href="https://www.isc.org/software/dhcp/">https://www.isc.org/software/dhcp/</a><br>
Config file: /etc/dhcp/dhcpd.conf<br>
Database file: /var/lib/dhcp/dhcpd.leases<br>
PID file: /var/run/dhcpd.pid<br>
Can't open /var/lib/dhcp/dhcpd.leases for append.<br>
<br>
If you think you have received this message due to a bug rather<br>
than a configuration issue please read the section on submitting<br>
bugs on either our web page at <a
class="moz-txt-link-abbreviated" href="http://www.isc.org">www.isc.org</a>
or in the README file<br>
before submitting a bug. These pages explain the proper<br>
process and the information we find helpful for debugging..<br>
<br>
exiting.<br>
root@yellow:~# <br>
</p>
<p><br>
</p>
<p>root@yellow:~# dhcpd -t -user dhcpd -group dhcpd<br>
Internet Systems Consortium DHCP Server 4.3.3<br>
Copyright 2004-2015 Internet Systems Consortium.<br>
All rights reserved.<br>
For info, please visit <a class="moz-txt-link-freetext"
href="https://www.isc.org/software/dhcp/">https://www.isc.org/software/dhcp/</a><br>
Config file: /etc/dhcp/dhcpd.conf<br>
Database file: /var/lib/dhcp/dhcpd.leases<br>
PID file: /var/run/dhcpd.pid</p>
<p><br>
</p>
<p># systemctl restart isc-dhcp-server</p>
# systemctl status isc-dhcp-server<br>
● isc-dhcp-server.service - ISC DHCP IPv4 server<br>
Loaded: loaded (/lib/systemd/system/isc-dhcp-server.service;
enabled; vendor preset: enabled)<br>
Active: active (running) since Fri 2018-01-26 10:49:55 PST; 23s
ago<br>
Docs: <a class="moz-txt-link-freetext" href="man:dhcpd(8)">man:dhcpd(8)</a><br>
Main PID: 20023 (dhcpd)<br>
CGroup: /system.slice/isc-dhcp-server.service<br>
└─20023 dhcpd -user dhcpd -group dhcpd -f -4 -pf
/run/dhcp-server/dhcpd.pid -cf /etc/dhcp<br>
<br>
Jan 26 10:49:55 yellow dhcpd[20023]: Sending on
LPF/br0/c8:3a:35:da:42:72/10.1.1.0/24<br>
Jan 26 10:49:55 yellow dhcpd[20023]: <br>
Jan 26 10:49:55 yellow dhcpd[20023]: No subnet declaration for
wlp2s0 (no IPv4 addresses).<br>
Jan 26 10:49:55 yellow dhcpd[20023]: ** Ignoring requests on
wlp2s0. If this is not what<br>
Jan 26 10:49:55 yellow dhcpd[20023]: you want, please write a
subnet declaration<br>
Jan 26 10:49:55 yellow dhcpd[20023]: in your dhcpd.conf file for
the network segment<br>
Jan 26 10:49:55 yellow dhcpd[20023]: to which interface wlp2s0 is
attached. **<br>
Jan 26 10:49:55 yellow dhcpd[20023]: <br>
Jan 26 10:49:55 yellow dhcpd[20023]: Sending on
Socket/fallback/fallback-net<br>
Jan 26 10:49:55 yellow dhcpd[20023]: Server starting service.<br>
<br>
<p># cat /etc/dhcp/dhcpd.conf</p>
<p><br>
</p>
<p>ddns-update-style none;<br>
option domain-name "FQDN";<br>
option domain-name-servers 10.1.1.1, 8.8.4.4, 50.23.197.95;<br>
<br>
default-lease-time 86400;<br>
max-lease-time 604800;<br>
<br>
authoritative;<br>
<br>
log-facility local7;<br>
<br>
<br>
subnet 10.1.1.0 netmask 255.255.255.0 {<br>
<b>interface wlp2s0;</b><br>
option domain-name-servers 10.1.1.1;<br>
max-lease-time 7200;<br>
default-lease-time 600;<br>
range 10.1.1.10 10.1.1.250;<br>
option subnet-mask 255.255.255.0;<br>
option broadcast-address 10.1.1.255;<br>
option routers 10.1.1.1;<br>
<br>
<br>
group {<br>
<br>
<br>
host yellow {<br>
hardware ethernet f0:7d:24:c2:c4:13;<br>
fixed-address 10.1.1.1;<br>
}<br>
<br>
host blue {<br>
hardware ethernet 00:23:ea:d1:c2:61;<br>
fixed-address 10.1.1.2;<br>
}<br>
}<br>
}<br>
<br>
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