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Today's Topics:
1. Re: dhcp-users Digest, Vol 136, Issue 13 (LOCHET Charles)
----------------------------------------------------------------------
Message: 1
Date: Thu, 27 Feb 2020 16:06:57 +0000
From: LOCHET Charles <charles.loc...@lecnam.net>
To: "dhcp-users@lists.isc.org" <dhcp-users@lists.isc.org>
Subject: Re: dhcp-users Digest, Vol 136, Issue 13
Message-ID: <3c4c686c-41c9-456b-bd0d-e95414c18...@lecnam.net>
Content-Type: text/plain; charset="utf-8"
---------------------
Charles Lochet ESGT / Le Cnam Service Informatique
1, Boulevard Pythagore
Campus Universitaire
72000 Le Mans M?l :
charles.loc...@lecnam.net<mailto:olivier.vil...@lecnam.net>
T?l : +33(0)2 43 43 31 03Fax : +33(0)2 43 43 31 57
Le 27 f?vr. 2020 ? 15:43,
dhcp-users-requ...@lists.isc.org<mailto:dhcp-users-requ...@lists.isc.org> a
?crit :
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Today's Topics:
1. no subnet declaration & not configured to listened on any
interfaces error message trouble (LOCHET Charles)
2. Re: no subnet declaration & not configured to listened on any
interfaces error message trouble (glenn.satch...@uniq.com.au)
----------------------------------------------------------------------
Message: 1
Date: Thu, 27 Feb 2020 13:50:05 +0000
From: LOCHET Charles <charles.loc...@lecnam.net>
To: "dhcp-users@lists.isc.org" <dhcp-users@lists.isc.org>
Subject: no subnet declaration & not configured to listened on any
interfaces error message trouble
Message-ID: <bdb48f96-0f73-4365-9240-bb25be66a...@lecnam.net>
Content-Type: text/plain; charset="utf-8"
We have 2 Dhcp server, dhcp3 service former debian, then changing
of virtualizing server, I have to reinstall them on new esxi virtualizing
servers,
so did install debian 10 and isc dhcp server, copie dhcpd.conf config file and
adapt it,
verify it with dhcpd -t dhcpd.conf got not error,
so start it and got error message:
no subnet declaration for start (no ipv4 adresses)
not configured to listen on any interfaces!
I then checked /etc/default/isc-dhcp-server and /etc/network/interface
files
which looked ok.
I had been advised to start with simpler dhcp.conf files to start and add bit
by bit areas?
But I always get the same error message whatever subnet declration I have
inside my config file.
I don?t understand what happens or what to do now? looks like what ever the
dhcpd.conf file is, I get same error
message, is there any other config file I don?t know about ? or anything
missing ?
server is at 192.134.130.43 and config files are such:
##########interfaces file:
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
source /etc/network/interfaces.d/*
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
allow-hotplug ens192
iface ens192 inet static
address 192.134.130.43
#address 192.134.130.20
netmask 255.255.255.240
gateway 192.134.130.33
broadcast 192.134.130.31
dns-nameservers 192.134.130.2, 192.134.130.22,163.173.128.6, 192.134.130.60
dns-search esgt.cnam.fr<http://esgt.cnam.fr>
up service isc-dhcp-server restart
###### isc-dhcp-server file:
# Defaults for isc-dhcp-server (sourced by /etc/init.d/isc-dhcp-server)
# Path to dhcpd's config file (default: /etc/dhcp/dhcpd.conf).
DHCPDv4_CONF=/etc/dhcp/dhcpd.conf
#DHCPDv6_CONF=/etc/dhcp/dhcpd6.conf
# Path to dhcpd's PID file (default: /var/run/dhcpd.pid).
DHCPDv4_PID=/var/run/dhcpd.pid
#DHCPDv6_PID=/var/run/dhcpd6.pid
# Additional options to start dhcpd with.
# Don't use options -cf or -pf here; use DHCPD_CONF/ DHCPD_PID instead
#OPTIONS=""
# On what interfaces should the DHCP server (dhcpd) serve DHCP requests?
# Separate multiple interfaces with spaces, e.g. "eth0 eth1".
INTERFACESv4="ens192"
INTERFACESv6=? ?
##### DHCPD.CONF file
# dhcpd.conf
#
# Sample configuration file for ISC dhcpd
#
option domain-name "esgt.cnam.fr<http://esgt.cnam.fr>";
option domain-name-servers marmite.egst.cnam.fr<http://marmite.egst.cnam.fr>;
option domain-name-servers marmite.esgt.cnam.fr<http://marmite.esgt.cnam.fr>,
163.173.128.6;
authoritative;
default-lease-time 600;
max-lease-time 7200;
subnet 192.134.130.32 netmask 255.255.255.240 {
range 192.134.130.34 192.134.130.46;
option subnet-mask 255.255.255.240;
option broadcast-address 192.134.130.47;
option routers 192.134.130.33;
}
# The ddns-updates-style parameter controls whether or not the server will
# attempt to do a DNS update when a lease is confirmed. We default to the
# behavior of the version 2 packages ('none', since DHCP v2 didn't
# have support for DDNS.)
ddns-update-style none;
---------------------
Charles Lochet ESGT / Le Cnam Service Informatique
1, Boulevard Pythagore
Campus Universitaire
72000 Le Mans M?l :
charles.loc...@lecnam.net<mailto:olivier.vil...@lecnam.net>
T?l : +33(0)2 43 43 31 03Fax : +33(0)2 43 43 31 57
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Message: 2
Date: Fri, 28 Feb 2020 01:43:11 +1100
From: glenn.satch...@uniq.com.au
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: no subnet declaration & not configured to listened on any
interfaces error message trouble
Message-ID: <1840ddfc1346ae28dc90c9c836570...@uniq.com.au>
Content-Type: text/plain; charset=UTF-8; format=flowed
Hi Charles,
The broadcast address in the interfaces file doesn't match the subnet:
broadcast 192.134.130.31
should be
broadcast 192.134.130.47
and that might cause dhcpd to think the local ip address is not in the
subnet.
Second thing is that the ip address of the dhcpd server is in the
defined range for dhcpd to hand out. The range should be specified as
range 192.134.130.34 192.134.130.42;
range 192.134.130.44 192.134.130.46;
regards,
-glenn
Hi!
thank you very much! that was it!
after many tries and changes may be the broadcast address of the interface fil
finally ended wrong.
but I didn?t think about the server itself being in subnet?
I changed and tried and no more error message, but this one instead:
There?s already a DHCP server running.
I so changed the IP to the former server and stopped it, it was secondary?
Got same ? There?s already a DHCP server running ?
So did the same for primary server, and got always same message error There?s
always a DHCP server running.
Both new server have now the former server Ip adresse, and former servers are
stopped.
Well, so did go back, changing IP and stopping new servers and running former
servers till tomorrow.
Is there timing to stop and replace, to avoid this and let new server replace
formers ?
Charles.
On 2020-02-28 00:50, LOCHET Charles wrote:
We have 2 Dhcp server, dhcp3 service former debian, then changing
of virtualizing server, I have to reinstall them on new esxi
virtualizing servers,
so did install debian 10 and isc dhcp server, copie dhcpd.conf config
file and adapt it,
verify it with dhcpd -t dhcpd.conf got not error,
so start it and got error message:
no subnet declaration for start (no ipv4 adresses)
not configured to listen on any interfaces!
I then checked /etc/default/isc-dhcp-server and
/etc/network/interface files
which looked ok.
I had been advised to start with simpler dhcp.conf files to start and
add bit by bit areas?
But I always get the same error message whatever subnet declration I
have inside my config file.
I don?t understand what happens or what to do now? looks like what
ever the dhcpd.conf file is, I get same error
message, is there any other config file I don?t know about ? or
anything missing ?
server is at 192.134.130.43 and config files are such:
##########interfaces file:
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
source /etc/network/interfaces.d/*
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
allow-hotplug ens192
iface ens192 inet static
address 192.134.130.43
#address 192.134.130.20
netmask 255.255.255.240
gateway 192.134.130.33
broadcast 192.134.130.31
dns-nameservers 192.134.130.2, 192.134.130.22,163.173.128.6,
192.134.130.60
dns-search esgt.cnam.fr<http://esgt.cnam.fr> [1]
up service isc-dhcp-server restart
###### isc-dhcp-server file:
# Defaults for isc-dhcp-server (sourced by
/etc/init.d/isc-dhcp-server)
# Path to dhcpd's config file (default: /etc/dhcp/dhcpd.conf).
DHCPDv4_CONF=/etc/dhcp/dhcpd.conf
#DHCPDv6_CONF=/etc/dhcp/dhcpd6.conf
# Path to dhcpd's PID file (default: /var/run/dhcpd.pid).
DHCPDv4_PID=/var/run/dhcpd.pid
#DHCPDv6_PID=/var/run/dhcpd6.pid
# Additional options to start dhcpd with.
# Don't use options -cf or -pf here; use DHCPD_CONF/ DHCPD_PID instead
#OPTIONS=""
# On what interfaces should the DHCP server (dhcpd) serve DHCP
requests?
# Separate multiple interfaces with spaces, e.g. "eth0 eth1".
INTERFACESv4="ens192"
INTERFACESv6=? ?
##### DHCPD.CONF file
# dhcpd.conf
#
# Sample configuration file for ISC dhcpd
#
option domain-name "esgt.cnam.fr<http://esgt.cnam.fr> [1]";
option domain-name-servers marmite.egst.cnam.fr<http://marmite.egst.cnam.fr>
[2];
option domain-name-servers marmite.esgt.cnam.fr<http://marmite.esgt.cnam.fr>
[3], 163.173.128.6;
authoritative;
default-lease-time 600;
max-lease-time 7200;
subnet 192.134.130.32 netmask 255.255.255.240 {
range 192.134.130.34 192.134.130.46;
option subnet-mask 255.255.255.240;
option broadcast-address 192.134.130.47;
option routers 192.134.130.33;
}
# The ddns-updates-style parameter controls whether or not the server
will
# attempt to do a DNS update when a lease is confirmed. We default to
the
# behavior of the version 2 packages ('none', since DHCP v2 didn't
# have support for DDNS.)
ddns-update-style none;
---------------------
Charles Lochet ESGT / Le Cnam Service Informatique
1, Boulevard Pythagore
Campus Universitaire
72000 Le Mans M?l :
charles.loc...@lecnam.net<mailto:charles.loc...@lecnam.net>
T?l : +33(0)2 43 43 31 03Fax : +33(0)2 43 43 31 57
Links:
------
[1] http://esgt.cnam.fr
[2] http://marmite.egst.cnam.fr
[3] http://marmite.esgt.cnam.fr
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