No subnet declaration; Can't open /var/lib/dhcp/dhcpd.leases for append

[Rick Dicaire]

subnet 10.1.1.0 netmask 255.255.255.0 {
        interface wlp2s0;
Does wlp2s0 have an IP in 10.1.1.0 assigned to it?

On Fri, Jan 26, 2018 at 2:10 PM, A <publicface at bak.rr.com> wrote:

> Hello,
>
> 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.
>
> 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?
>
> Thank you in advance for any solutions and/or helpful suggestions!
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> ubuntu 16.04
> root at yellow:~# dhcpd -d -user dhcpd -group dhcpd
>
> Internet Systems Consortium DHCP Server 4.3.3
> Copyright 2004-2015 Internet Systems Consortium.
> All rights reserved.
> For info, please visit https://www.isc.org/software/dhcp/
> Config file: /etc/dhcp/dhcpd.conf
> Database file: /var/lib/dhcp/dhcpd.leases
> PID file: /var/run/dhcpd.pid
> Can't open /var/lib/dhcp/dhcpd.leases for append.
>
> If you think you have received this message due to a bug rather
> than a configuration issue please read the section on submitting
> bugs on either our web page at www.isc.org or in the README file
> before submitting a bug.  These pages explain the proper
> process and the information we find helpful for debugging..
>
> exiting.
> root at yellow:~#
>
>
> root at yellow:~# dhcpd -t -user dhcpd -group dhcpd
> Internet Systems Consortium DHCP Server 4.3.3
> Copyright 2004-2015 Internet Systems Consortium.
> All rights reserved.
> For info, please visit https://www.isc.org/software/dhcp/
> Config file: /etc/dhcp/dhcpd.conf
> Database file: /var/lib/dhcp/dhcpd.leases
> PID file: /var/run/dhcpd.pid
>
>
> # systemctl restart isc-dhcp-server
> # systemctl status isc-dhcp-server
> ● isc-dhcp-server.service - ISC DHCP IPv4 server
>    Loaded: loaded (/lib/systemd/system/isc-dhcp-server.service; enabled;
> vendor preset: enabled)
>    Active: active (running) since Fri 2018-01-26 10:49:55 PST; 23s ago
>      Docs: man:dhcpd(8)
>  Main PID: 20023 (dhcpd)
>    CGroup: /system.slice/isc-dhcp-server.service
>            └─20023 dhcpd -user dhcpd -group dhcpd -f -4 -pf
> /run/dhcp-server/dhcpd.pid -cf /etc/dhcp
>
> Jan 26 10:49:55 yellow dhcpd[20023]: Sending on
> LPF/br0/c8:3a:35:da:42:72/10.1.1.0/24
> Jan 26 10:49:55 yellow dhcpd[20023]:
> Jan 26 10:49:55 yellow dhcpd[20023]: No subnet declaration for wlp2s0 (no
> IPv4 addresses).
> Jan 26 10:49:55 yellow dhcpd[20023]: ** Ignoring requests on wlp2s0.  If
> this is not what
> Jan 26 10:49:55 yellow dhcpd[20023]:    you want, please write a subnet
> declaration
> Jan 26 10:49:55 yellow dhcpd[20023]:    in your dhcpd.conf file for the
> network segment
> Jan 26 10:49:55 yellow dhcpd[20023]:    to which interface wlp2s0 is
> attached. **
> Jan 26 10:49:55 yellow dhcpd[20023]:
> Jan 26 10:49:55 yellow dhcpd[20023]: Sending on
> Socket/fallback/fallback-net
> Jan 26 10:49:55 yellow dhcpd[20023]: Server starting service.
>
> # cat /etc/dhcp/dhcpd.conf
>
>
> ddns-update-style none;
> option domain-name "FQDN";
> option domain-name-servers 10.1.1.1, 8.8.4.4, 50.23.197.95;
>
> default-lease-time 86400;
> max-lease-time 604800;
>
> authoritative;
>
> log-facility local7;
>
>
> 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;
>
>
>     group {
>
>
>         host yellow {
>             hardware ethernet f0:7d:24:c2:c4:13;
>             fixed-address 10.1.1.1;
>         }
>
>         host blue {
>             hardware ethernet 00:23:ea:d1:c2:61;
>             fixed-address 10.1.1.2;
>         }
>     }
> }
>
>
>
>
>
>
>
>
>
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>
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