How could I fix "No subnet declaration for restart (0.0.0.0)"?
Solution 1
Your dhcpd.conf looks fishy. Examples:
- "option routers" : router gateway 192.168.0.254 seems unlikely, should normally be ".1".
- "default-lease-time" : 10 minutes is much too low.
I suggest reading the tutorial at Linux DHCP Server Configuration and basing your dhcpd.conf on the example at the beginning, putting in your values (stop at "option time-offset").
If the problem persists please update your post, also adding the output of route -n
.
Solution 2
Your configuration looks acceptable. It looks like you may be restarting the service incorrectly.
Using the exact configuration from your question:
root@bt:~# service dhcp3-server restart
* Stopping DHCP server dhcpd3 [fail]
* Starting DHCP server dhcpd3 [ OK ]
However this (wrong) command gives me the output you posted:
root@bt:~# dhcpd3 restart
Internet Systems Consortium DHCP Server V3.1.3
Copyright 2004-2009 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/
Wrote 0 leases to leases file.
No subnet declaration for restart (0.0.0.0).
** Ignoring requests on restart. If this is not what
you want, please write a subnet declaration
in your dhcpd.conf file for the network segment
to which interface restart is attached. **
Not configured to listen on any interfaces!
If that does not work, try to reconfigure the package:
dpkg-reconfigure dhcp3-server
If that does not work, reinstall the package (saves configuration):
apt-get install --reinstall dhcp3-server
Solution 3
Which ‘DNS service’ do you use? Bind should normally not be a problem, but dnsmasq includes its own DHCP server.
To clarify: If dnsmasq is already running when you try to restart the DHCP server, the DHCP server would be unable to bind to port 53. Although I would expect it to output a slightly more sensible error message, technically it would not be configured to listen on any interfaces.
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poz2k4444
Updated on September 18, 2022Comments
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poz2k4444 over 1 year
I have a DHCP service installed on my distribution, Backtrack 5 R2 (ubuntu 10.04) and it was working fine, but when I began to configure DNS it suddenly stoped working, how can I make it work again??
The dhcp.conf file:
ddns-update-style none; option domain-name "admin.servers.net"; default-lease-time 600; max-lease-time 7200; authoritative; log-facility local7; subnet 192.168.0.0 netmask 255.255.255.0 { range 192.168.0.50 192.168.0.100; option domain-name-servers 192.168.0.2, 8.8.4.4; option routers 192.168.0.254; option broadcast-address 192.168.0.255; default-lease-time 600; max-lease-time 7200; }
And when I restart the service it shows:
Internet Systems Consortium DHCP Server V3.1.3 Copyright 2004-2009 Internet Systems Consortium. All rights reserved. For info, please visit https://www.isc.org/software/dhcp/ Wrote 4 leases to leases file. No subnet declaration for restart (0.0.0.0). ** Ignoring requests on restart. If this is not what you want, please write a subnet declaration in your dhcpd.conf file for the network segment to which interface restart is attached. ** Not configured to listen on any interfaces!
dhcp3-server has:
INTERFACES="eth0"
ip address:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 04:7d:7b:15:29:6b brd ff:ff:ff:ff:ff:ff inet 192.168.0.2/24 brd 192.168.0.255 scope global eth0 inet6 fe80::67d:7bff:fe15:296b/64 scope link valid_lft forever preferred_lft forever 3: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen 1000 link/ether 74:e5:0b:57:b4:82 brd ff:ff:ff:ff:ff:ff
ip route:
default via 192.168.0.254 dev eth0 192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.8
/etc/network/interfaces:
auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 192.168.0.2 network 192.168.0.0 netmask 255.255.255.0 broadcast 192.168.0.255 gateway 192.168.0.254
route -n
Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.0.254 0.0.0.0 UG 100 0 0 eth0 192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
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harrymc over 11 yearsWhy do you have ns1.example.org/ns2 in dhcp.conf? I would suggest stripping it down to absolute essentials and see if the problem occurs. If it does, see if
./dhcpd restart
improves anything. Also add to your post the contents of/etc/network/interfaces
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harrymc over 11 yearsPlease also update above dhcp.conf.
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poz2k4444 over 11 yearsIt's Bind, I've tried a lot of things, and one of them is stopping all the services and start DHCP and still not working
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poz2k4444 over 11 yearsI figured it out when I was setting it up, now I restart with
/etc/init.d/dhcp3-server restart
and still through the error -
h0tw1r3 over 11 yearshave you tried
dpkg-reconfigure dhcp3-server
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poz2k4444 over 11 yearsTried, still not working, is there any other file that could be causing problems?? other than I'm posting on the question?
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h0tw1r3 over 11 yearsdid you try
apt-get install --reinstall dhcp3-server
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poz2k4444 over 11 yearsyes I did, and now, I don't know if it's the same issue, the
wicd
doesn't work properly haha :(