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<div class="moz-cite-prefix">On 01/27/2018 05:43 AM, Bill Shirley
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:72a291a7-9bed-bdae-bd5b-562ced4bd7a9@c3po.polymerindustries.biz">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
This is all kinds of confusing. You're configuring DHCP on a
machine<br>
named 'yellow' who's address is 10.1.1.2 and has a gateway of
10.1.1.1.<br>
Yet 'yellow' has a WAN connection?<br>
</blockquote>
<br>
yellow is at 10.1.1.1. The .2 was a typo.<br>
<br>
<blockquote type="cite"
cite="mid:72a291a7-9bed-bdae-bd5b-562ced4bd7a9@c3po.polymerindustries.biz">
<br>
You've configured DHCP for subnet 10.1.1.0/24 which is on
interface<br>
'enp4s5' which IS NOT UP. Can you ping anything on the LAN?<br>
<br>
Is 'yellow' the internet gateway?<br>
<br>
Also your DHCP configuration:<br>
<font color="#993300"><tt> host yellow {</tt><tt><br>
</tt><tt> hardware ethernet f0:7d:24:c2:c4:13;</tt><tt><br>
</tt><tt> fixed-address 10.1.1.1;</tt><tt><br>
</tt><tt> }</tt><tt><br>
</tt><tt> </tt></font>^^You're defining 'yellow' (which is the
DHCP server!!) and it has a<br>
different address that the one you defined in <font face="Arial">/etc/network/interfaces!!</font><br>
<font color="#993300"><tt>iface enp4s5 inet static<br>
address 10.1.1.2/24</tt><tt><br>
</tt></font></blockquote>
<br>
<tt><font color="#993300"><font color="#000000">Nice catch!</font><br>
<br>
</font></tt>
<blockquote type="cite"
cite="mid:72a291a7-9bed-bdae-bd5b-562ced4bd7a9@c3po.polymerindustries.biz"><font
color="#993300"><tt> </tt></font><br>
Don't define host 'yellow' in the DHCP configuration. Add a
comment if<br>
you like.<br>
</blockquote>
<br>
OK. I also removed blue. However I did entered them so that yellow
& blue would each always get the same IP. dhcp is primarily for
wireless devices at the moment. But, I do expect more wired devices
that will need dhcp at some point.<br>
<br>
<blockquote type="cite"
cite="mid:72a291a7-9bed-bdae-bd5b-562ced4bd7a9@c3po.polymerindustries.biz">
<br>
You need to figure out which 10.1.1.0/24 address 'yellow' is
supposed to<br>
have and bring up interface 'enp4s5'.<br>
<br>
Is 'yellow' the gateway for 10.1.1.0/24? Your '<font
color="#993300">option routers 10.1.1.1</font>'<br>
says it's not.<br>
</blockquote>
<br>
Yes. yellow is at 10.1.1.1, it is the gateway. <br>
<br>
My updated dhcpd.conf:<br>
<br>
ddns-update-style none;<br>
option domain-name "myFQDN";<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>
subnet 10.1.1.0 netmask 255.255.255.0 {<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>
# ip -4 -o addr<br>
1: lo inet 127.0.0.1/8 scope host lo\ valid_lft forever
preferred_lft forever<br>
2: enp4s5 inet 10.1.1.1/24 brd 10.1.1.255 scope global
enp4s5\ valid_lft forever preferred_lft forever<br>
3: enp6s0 inet [xx.xx.xx.xx/20 brd 255.255.255.255 scope global
enp6s0\ valid_lft forever preferred_lft forever<br>
4: wlp2s0 inet 10.1.1.10/24 brd 10.1.1.255 scope global
wlp2s0\ valid_lft forever preferred_lft forever<br>
<br>
<br>
systemctl status isc-dhcp-server<br>
root@yellow:/usr/local/src/myscripts# 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 Sat 2018-01-27 10:37:48 PST; 10min
ago<br>
Docs: <a class="moz-txt-link-freetext" href="man:dhcpd(8)">man:dhcpd(8)</a><br>
Main PID: 5804 (dhcpd)<br>
CGroup: /system.slice/isc-dhcp-server.service<br>
└─5804 dhcpd -user dhcpd -group dhcpd -f -4 -pf
/run/dhcp-server/dhcpd.pid -cf /etc/dhcp/<br>
<br>
Jan 27 10:37:48 yellow dhcpd[5804]: <font color="#ff6666"> <b>in
your dhcpd.conf file for the network segment</b></font><br>
Jan 27 10:37:48 yellow dhcpd[5804]: <b><font color="#ff6666">to
which interface enp4s5 is attached</font></b>. **<br>
Jan 27 10:37:48 yellow dhcpd[5804]: <br>
Jan 27 10:37:48 yellow dhcpd[5804]: Listening on
LPF/wlp2s0/f0:7d:68:c1:b4:13/10.1.1.0/24<br>
Jan 27 10:37:48 yellow dhcpd[5804]: Sending on
LPF/wlp2s0/f0:7d:68:c1:b4:13/10.1.1.0/24<br>
Jan 27 10:37:48 yellow sh[5804]: Listening on
LPF/wlp2s0/f0:7d:68:c1:b4:13/10.1.1.0/24<br>
Jan 27 10:37:48 yellow sh[5804]: Sending on
LPF/wlp2s0/f0:7d:68:c1:b4:13/10.1.1.0/24<br>
Jan 27 10:37:48 yellow sh[5804]: Sending on
Socket/fallback/fallback-net<br>
Jan 27 10:37:48 yellow dhcpd[5804]: Sending on
Socket/fallback/fallback-net<br>
Jan 27 10:37:48 yellow dhcpd[5804]: Server starting service.<br>
<br>
<br>
syslog:<br>
<br>
Jan 27 10:37:48 yellow systemd[1]: Started ISC DHCP IPv4 server.<br>
Jan 27 10:37:48 yellow dhcpd[5804]: Internet Systems Consortium DHCP
Server 4.3.3<br>
Jan 27 10:37:48 yellow sh[5804]: Internet Systems Consortium DHCP
Server 4.3.3<br>
Jan 27 10:37:48 yellow sh[5804]: Copyright 2004-2015 Internet
Systems Consortium.<br>
Jan 27 10:37:48 yellow sh[5804]: All rights reserved.<br>
Jan 27 10:37:48 yellow sh[5804]: 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>
Jan 27 10:37:48 yellow dhcpd[5804]: Copyright 2004-2015 Internet
Systems Consortium.<br>
Jan 27 10:37:48 yellow dhcpd[5804]: All rights reserved.<br>
Jan 27 10:37:48 yellow dhcpd[5804]: 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>
Jan 27 10:37:48 yellow dhcpd[5804]: Config file:
/etc/dhcp/dhcpd.conf<br>
Jan 27 10:37:48 yellow sh[5804]: Config file: /etc/dhcp/dhcpd.conf<br>
Jan 27 10:37:48 yellow sh[5804]: Database file:
/var/lib/dhcp/dhcpd.leases<br>
Jan 27 10:37:48 yellow sh[5804]: PID file:
/run/dhcp-server/dhcpd.pid<br>
Jan 27 10:37:48 yellow dhcpd[5804]: Database file:
/var/lib/dhcp/dhcpd.leases<br>
Jan 27 10:37:48 yellow sh[5804]: Wrote 4 leases to leases file.<br>
Jan 27 10:37:48 yellow dhcpd[5804]: PID file:
/run/dhcp-server/dhcpd.pid<br>
Jan 27 10:37:48 yellow dhcpd[5804]: Internet Systems Consortium DHCP
Server 4.3.3<br>
Jan 27 10:37:48 yellow dhcpd[5804]: Copyright 2004-2015 Internet
Systems Consortium.<br>
Jan 27 10:37:48 yellow dhcpd[5804]: All rights reserved.<br>
Jan 27 10:37:48 yellow dhcpd[5804]: 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>
Jan 27 10:37:48 yellow dhcpd[5804]: Wrote 4 leases to leases file.<br>
Jan 27 10:37:48 yellow dhcpd[5804]: <br>
Jan 27 10:37:48 yellow sh[5804]: No subnet declaration for enp4s5
(no IPv4 addresses).<br>
Jan 27 10:37:48 yellow sh[5804]: ** Ignoring requests on enp4s5. If
this is not what<br>
Jan 27 10:37:48 yellow sh[5804]: you want, please write a subnet
declaration<br>
Jan 27 10:37:48 yellow sh[5804]: in your dhcpd.conf file for the
network segment<br>
Jan 27 10:37:48 yellow sh[5804]: to which interface enp4s5 is
attached. **<br>
Jan 27 10:37:48 yellow dhcpd[5804]: No subnet declaration for enp4s5
(no IPv4 addresses).<br>
Jan 27 10:37:48 yellow dhcpd[5804]: ** Ignoring requests on enp4s5.
If this is not what<br>
Jan 27 10:37:48 yellow dhcpd[5804]: you want, please write a
subnet declaration<br>
Jan 27 10:37:48 yellow dhcpd[5804]: in your dhcpd.conf file for
the network segment<br>
Jan 27 10:37:48 yellow dhcpd[5804]: to which interface enp4s5 is
attached. **<br>
Jan 27 10:37:48 yellow dhcpd[5804]: <br>
Jan 27 10:37:48 yellow dhcpd[5804]: Listening on
LPF/wlp2s0/f0:7d:68:c1:b4:13/10.1.1.0/24<br>
Jan 27 10:37:48 yellow dhcpd[5804]: Sending on
LPF/wlp2s0/f0:7d:68:c1:b4:13/10.1.1.0/24<br>
Jan 27 10:37:48 yellow sh[5804]: Listening on
LPF/wlp2s0/f0:7d:68:c1:b4:13/10.1.1.0/24<br>
Jan 27 10:37:48 yellow sh[5804]: Sending on
LPF/wlp2s0/f0:7d:68:c1:b4:13/10.1.1.0/24<br>
Jan 27 10:37:48 yellow sh[5804]: Sending on
Socket/fallback/fallback-net<br>
Jan 27 10:37:48 yellow dhcpd[5804]: Sending on
Socket/fallback/fallback-net<br>
Jan 27 10:37:48 yellow dhcpd[5804]: Server starting service.<br>
<br>
# cat /etc/network/interfaces<br>
<br>
auto lo<br>
iface lo inet loopback<br>
dns-nameservers 10.1.1.1 8.8.8.8 8.8.4.4 50.23.197.95<br>
dns-search myFQDN<br>
<br>
auto enp6s0<br>
<br>
iface enp6s0 inet dhcp<br>
dns-nameservers 10.1.1.1 8.8.8.8 8.8.4.4 50.23.197.95 <br>
dns-search myFQDN<br>
<br>
<br>
auto enp4s5<br>
allow-hotplug enp4s5 <br>
iface enp4s5 inet static<br>
address 10.1.1.1/24<br>
gateway 10.1.1.1<br>
network 10.1.1.0<br>
netmask 255.255.255.0 <br>
broadcast 10.1.1.255<br>
<br>
pre-up ip link set enp4s5 down<br>
up ip link set enp4s5 up<br>
<br>
#down ip link set enp4s5 down<br>
# post-down <insert command here><br>
<br>
<br>
allow-hotplug wlp2s0 <br>
<br>
iface wlp2s0 inet static<br>
address 10.1.1.3/24<br>
gateway 10.1.1.1<br>
network 10.1.1.0<br>
netmask 255.255.255.0 <br>
broadcast 10.1.1.255<br>
<br>
pre-up ip link set wlp2s0 down<br>
up ip link set wlp2s0 up<br>
down ip link set wlp2s0 down<br>
<br>
wireless-mode master<br>
wireless-essid BHNDK16A0C1Z12<br>
wireless-channel 1<br>
wpa-ssid BHNDK16A0C1Z12<br>
<br>
# encrypted passwd<br>
wpa-psk [redacted]<br>
gateway 10.1.1.1<br>
<br>
<br>
<br>
<blockquote type="cite"
cite="mid:72a291a7-9bed-bdae-bd5b-562ced4bd7a9@c3po.polymerindustries.biz">
<br>
Bill<br>
<br>
<div class="moz-cite-prefix">On 1/27/2018 5:57 AM, Simon Hobson
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:E0B3AA68-C71D-49CF-9519-D4F1431EEC6D@thehobsons.co.uk">
<pre wrap="">A <a class="moz-txt-link-rfc2396E" href="mailto:publicface@bak.rr.com" moz-do-not-send="true"><publicface@bak.rr.com></a> wrote:
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre wrap="">Also in your first post:
subnet 10.1.1.0 netmask 255.255.255.0 {
interface wlp2s0;
option domain-name-servers 10.1.1.1;
max-lease-time 7200;
default-lease-time 600;
range 10.1.1.10 10.1.1.250;
option subnet-mask 255.255.255.0;
option broadcast-address 10.1.1.255;
option routers 10.1.1.1;
As far as I know there is no interface directive. Plus wlp2s0 is the wrong
interface. You should remove that line.
</pre>
</blockquote>
<pre wrap=""> Wrong name for the device? Or just shouldn't be the wireless interface? Why is it wrong?
</pre>
</blockquote>
<pre wrap="">There is no instruction in dhcpd.conf called "interface". The example you found probably had it as a comment to help the person keep track of what is where.
</pre>
<blockquote type="cite">
<pre wrap="">If that's not how to specify the interface for that subnet, then what is the proper way please?
</pre>
</blockquote>
<pre wrap="">You don't ! It happens automagically, and bear in mind that a subnet served by a DHCP server does NOT have to be directly connected - it can come via a relay agent.
The server uses the IP address(es) of the interface for directly connected clients, or the Gateway Interface Address (GIAddr) field inserted by a relay agent if the client is remote (the other side of a router). That address is used to determine which subnet a client is connected to.
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre wrap="">What does 'ip -4 -o addr' show?
</pre>
</blockquote>
<pre wrap=""># ip -4 -o addr
1: lo inet 127.0.0.1/8 scope host lo\ valid_lft forever preferred_lft forever
3: enp6s0 inet xx.xx.xx.xx/20 brd 255.255.255.255 scope global enp6s0\ valid_lft forever preferred_lft forever
</pre>
</blockquote>
<pre wrap="">OK, you do not have IPv4 addresses on any internal interface ! it isn't going to work like that. Or have you deleted lines from that output thinking they aren't relevant ?
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</pre>
</blockquote>
<br>
<br>
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</blockquote>
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