4.1.1 lease duplicate
Roar Pettersen
roar.pettersen at uib.no
Wed May 19 14:37:50 UTC 2010
Hi !
We are seeing lot's of duplicate in log files, and users also reports duplicate
ip addresses. Here is some of our config and logs :
Internet Systems Consortium DHCP Server 4.1.1
authoritative;
ddns-update-style none;
ddns-updates off;
server-identifier dhcp1.domain.com;
option domain-name "domain.com";
option domain-name-servers 10.0.0.3, 10.0.0.1;
default-lease-time 7200;
max-lease-time 21600;
option netbios-node-type 2;
always-broadcast on;
one-lease-per-client true;
deny duplicates;
ignore declines;
ignore client-updates;
failover peer "dhcp" {
primary;
address 10.0.0.3;
port 647;
peer address 10.0.0.1;
peer port 647;
max-response-delay 60;
max-unacked-updates 10;
load balance max seconds 3;
mclt 600;
split 128;
}
subnet 10.8.32.0 netmask 255.255.255.0 {
option domain-name "domain.com";
option domain-name-servers 10.0.0.3, 10.0.0.1;
option broadcast-address 10.8.32.255;
option routers 10.8.32.1;
pool {
failover peer "dhcp";
deny dynamic bootp clients;
range 10.8.32.12 10.8.32.249;
}
}
May 18 22:41:37 dhcp-1 dhcpd: DHCPDISCOVER from 00:23:12:02:e1:88 via 10.8.32.1
May 18 22:41:38 dhcp-1 dhcpd: DHCPOFFER on 10.8.32.227 to 00:23:12:02:e1:88 via 10.8.32.1
May 18 22:41:39 dhcp-1 dhcpd: DHCPDISCOVER from 00:23:12:02:e1:88 via 10.8.32.1
May 18 22:41:39 dhcp-1 dhcpd: DHCPOFFER on 10.8.32.227 to 00:23:12:02:e1:88 via 10.8.32.1
May 18 22:41:41 dhcp-1 dhcpd: DHCPDISCOVER from 00:23:12:02:e1:88 via 10.8.32.1
May 18 22:41:41 dhcp-1 dhcpd: DHCPOFFER on 10.8.32.227 to 00:23:12:02:e1:88 via 10.8.32.1
May 18 22:41:46 dhcp-1 dhcpd: DHCPDISCOVER from 00:23:12:02:e1:88 via 10.8.32.1
May 18 22:41:46 dhcp-1 dhcpd: DHCPOFFER on 10.8.32.227 to 00:23:12:02:e1:88 via 10.8.32.1
May 18 22:41:47 dhcp-1 dhcpd: DHCPREQUEST for 10.8.32.227 (10.0.0.3) from 00:23:12:02:e1:88 via 10.8.32.1
May 18 22:41:47 dhcp-1 dhcpd: DHCPACK on 10.8.32.227 to 00:23:12:02:e1:88 via 10.8.32.1
May 18 22:41:48 dhcp-1 dhcpd: DHCPREQUEST for 10.8.32.227 (10.0.0.3) from 00:23:12:02:e1:88 via 10.8.32.1
May 18 22:41:48 dhcp-1 dhcpd: DHCPACK on 10.8.32.227 to 00:23:12:02:e1:88 via 10.8.32.1
May 18 22:41:47 dhcp-1 dhcpd: DHCPREQUEST for 10.8.32.227 (10.0.0.3) from 00:23:12:02:e1:88 via 10.8.32.1: lease owned by peer
May 18 22:41:48 dhcp-1 dhcpd: DHCPREQUEST for 10.8.32.227 (10.0.0.3) from 00:23:12:02:e1:88 via 10.8.32.1
May 18 22:41:48 dhcp-1 dhcpd: DHCPACK on 10.8.32.227 to 00:23:12:02:e1:88 via 10.8.32.1
authoritative;
ddns-update-style none;
ddns-updates off;
server-identifier dhcp2.domain.com;
option domain-name "domain.com";
option domain-name-servers 10.0.0.3, 10.0.0.1;
default-lease-time 7200;
max-lease-time 21600;
option netbios-node-type 2;
always-broadcast on;
one-lease-per-client true;
deny duplicates;
ignore declines;
ignore client-updates;
failover peer "dhcp" {
secondary;
address 10.0.0.1;
port 647;
peer address 10.0.0.3;
peer port 647;
max-response-delay 60;
max-unacked-updates 10;
load balance max seconds 3;
}
subnet 10.8.32.0 netmask 255.255.255.0 {
option domain-name "domain.com";
option domain-name-servers 10.0.0.3,10.0.0.1;
option broadcast-address 10.8.32.255;
option routers 10.8.32.1;
pool {
failover peer "dhcp";
deny dynamic bootp clients;
range 10.8.32.12 10.8.32.249;
}
}
May 18 22:41:37 dhcp-2 dhcpd: DHCPDISCOVER from 00:23:12:02:e1:88 via
10.8.32.1: load balance to peer dhcp
May 18 22:41:39 dhcp-2 dhcpd: DHCPDISCOVER from 00:23:12:02:e1:88 via 10.8.32.1
May 18 22:41:40 dhcp-2 dhcpd: DHCPOFFER on 10.8.32.76 to 00:23:12:02:e1:88 via
10.8.32.1
May 18 22:41:41 dhcp-2 dhcpd: DHCPDISCOVER from 00:23:12:02:e1:88 via 10.8.32.1
May 18 22:41:41 dhcp-2 dhcpd: DHCPOFFER on 10.8.32.76 to 00:23:12:02:e1:88 via
10.8.32.1
May 18 22:41:46 dhcp-2 dhcpd: DHCPDISCOVER from 00:23:12:02:e1:88 via 10.8.32.1
May 18 22:41:46 dhcp-2 dhcpd: DHCPOFFER on 10.8.32.76 to 00:23:12:02:e1:88 via
10.8.32.1
May 18 22:41:47 dhcp-2 dhcpd: uid lease 10.8.32.76 for client 00:23:12:02:e1:88
is duplicate on 10.8.32.0/24
--
Regards;
Roar Pettersen
Universitetet i Bergen - The University of Bergen
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