Problem with multiple interfaces / multiple IPs per interface in linux, with dhcp server.
Cesar Forestier
cforestier at gmail.com
Thu Jul 13 19:16:57 UTC 2006
Hi
Perhaps a configuration like this works for you
dhcpd.conf
authoritative;
default-lease-time 600;
#max-lease-time 7200;
max-lease-time 1800;
ddns-update-style interim;
ddns-ttl 7200;
allow bootp;
shared-network lasernet1{
subnet 192.168.3.0 netmask 255.255.255.248
{
option subnet-mask 255.255.255.248;
allow client-updates;
allow unknown-clients;
allow booting;
allow bootp;
next-server 192.168.3.1;
filename "/pxelinux.0";
ping-check true;
server-identifier 192.168.3.1;
option domain-name-servers 192.168.3.1, 213.157.167.157;
option routers 192.168.3.1;
use-host-decl-names off;
range 192.168.3.2 192.168.3.6;
}
}
#End of shared Network (eth3)
shared-network lasernet2{
subnet 192.168.2.0 netmask 255.255.255.248
{
option subnet-mask 255.255.255.248;
allow client-updates;
allow unknown-clients;
allow booting;
allow bootp;
next-server 192.168.3.1;
filename "/pxelinux.0";
ping-check true;
server-identifier 192.168.2.1;
option domain-name-servers 192.168.2.1, 213.157.167.157;
option routers 192.168.2.1;
use-host-decl-names off;
range 192.168.2.2 192.168.2.6;
}
subnet 192.168.0.8 netmask 255.255.255.248
{
option subnet-mask 255.255.255.248;
deny client-updates;
deny unknown-clients;
allow booting
··· All the others networks
}
}
# End of shared Network (eth2)
Cheers
Cesar
2006/7/13, psihozefir <sorin.panca at gmail.com>:
> I run ISC DHCP server version 3.0.4-r1 on Gentoo Linux ~x86 and I have
> the following configuration:
> eth0 - ieee1394 LAN0 - not configured
> eth1 - The Internet (client of some dhcp server at my ISP)
> eth2 - intranet LAN1 configured with multiple IPs with the iproute2
> package (not aliasses); the configured addresses are:
> 192.168.0.1/29; 192.168.0.9/29; 192.168.0.17/29;
> 192.168.0.25/29; 192.168.0.33/29; 192.168.0.41/29;
> 192.168.0.49/29; 192.168.0.57/29; 192.168.0.65/29;
> 192.168.0.73/29;192.168.0.81/29;192.168.0.89/29;
> 192.168.0.97/29 and 192.168.2.1/29.
> Please notice the last one!
> eth3 - intranet LAN2 configured with the address 192.168.3.1/29.
> All works well with the 192.168.0.* subnets.
> When I connect a diskless computer to eth3
> _sometimes_ it gets 192.168.3.5 and other times
> it gets 192.168.2.3... This is very odd.
> if i restart the dhcp server, the problem persists.
> The error displayed by the PXE client is `PXE-E11: ARP-timeout.'
> This error is normal as the server is not connected to the client
> through eth2 (which has the address 192.168.2.1/29),
> but through eth3 (that has 192.168.3.1).
> The server serves the wrong address.
> Here is my dhcpd.conf file
> Until today the client got 192.168.3.5 address.
> I have no other clients connected to eth3.
>
> # dhcpd.conf
> authoritative;
>
> default-lease-time 600;
> #max-lease-time 7200;
> max-lease-time 1800;
> ddns-update-style interim;
> ddns-ttl 7200;
> allow bootp;
>
>
> shared-network lasernet{
>
> subnet 192.168.3.0 netmask 255.255.255.248
> {
> option subnet-mask 255.255.255.248;
> allow client-updates;
> allow unknown-clients;
> allow booting;
> allow bootp;
> next-server 192.168.3.1;
> filename "/pxelinux.0";
> ping-check true;
> server-identifier 192.168.3.1;
> option domain-name-servers 192.168.3.1, 213.157.167.157;
> option routers 192.168.3.1;
> use-host-decl-names off;
> range 192.168.3.2 192.168.3.6;
> }
>
> subnet 192.168.2.0 netmask 255.255.255.248
> {
> option subnet-mask 255.255.255.248;
> allow client-updates;
> allow unknown-clients;
> allow booting;
> allow bootp;
> next-server 192.168.3.1;
> filename "/pxelinux.0";
> ping-check true;
> server-identifier 192.168.2.1;
> option domain-name-servers 192.168.2.1, 213.157.167.157;
> option routers 192.168.2.1;
> use-host-decl-names off;
> range 192.168.2.2 192.168.2.6;
> }
>
> subnet 192.168.0.8 netmask 255.255.255.248
> {
> option subnet-mask 255.255.255.248;
> deny client-updates;
> deny unknown-clients;
> allow booting;
> allow bootp;
> next-server 192.168.3.1;
> filename "/pxelinux.0";
> ping-check true;
> server-identifier 192.168.0.9;
> option domain-name-servers 192.168.0.9, 213.157.167.157;
> option routers 192.168.0.9;
> use-host-decl-names off;
>
> host termita1 {
> hardware ethernet 02:D0:B7:7E:23:25;
> fixed-address 192.168.0.10;}
>
> host termita2 {
> hardware ethernet 02:50:BF:77:DA:C7;
> fixed-address 192.168.0.10;}
>
> host cristy {
> hardware ethernet 00:E0:18:DC:E0:E8;
> fixed-address 192.168.0.11;}
>
> host mariana {
> hardware ethernet 00:0F:EA:2C:5B:67;
> fixed-address 192.168.0.13;}
>
>
> }
>
> subnet 192.168.0.16 netmask 255.255.255.248
> {
> option subnet-mask 255.255.255.248;
> deny client-updates;
> deny unknown-clients;
> allow booting;
> allow bootp;
> next-server 192.168.3.1;
> filename "/pxelinux.0";
> ping-check true;
> server-identifier 192.168.0.17;
> option domain-name-servers 192.168.0.17, 213.157.167.157;
> option routers 192.168.0.17;
> use-host-decl-names off;
>
> host lorduzzi {
> hardware ethernet 00:0B:DB:DE:42:55;
> fixed-address 192.168.0.18;}
>
> host lorduzzitest {
> hardware ethernet 00:C0:9F:A8:11:55;
> fixed-address 192.168.0.22;}
>
> host emi {
> hardware ethernet 00:13:D4:6A:1D:F6;
> fixed-address 192.168.0.19;}
>
> host terorizer {
> hardware ethernet 00:60:08:4F:03:6C;
> fixed-address 192.168.0.20;}
>
> host valee {
> hardware ethernet 00:C0:A8:FB:FC:E6;
> fixed-address 192.168.0.21;}
>
>
> }
>
> subnet 192.168.0.24 netmask 255.255.255.248
> {
> option subnet-mask 255.255.255.248;
> deny client-updates;
> deny unknown-clients;
> allow booting;
> allow bootp;
> next-server 192.168.3.1;
> filename "/pxelinux.0";
> ping-check true;
> server-identifier 192.168.0.25;
> option domain-name-servers 192.168.0.25, 213.157.167.157;
> option routers 192.168.0.25;
> use-host-decl-names off;
>
> host yogo {
> hardware ethernet 00:08:C7:39:EC:4D;
> fixed-address 192.168.0.27;}
>
> host bradg {
> hardware ethernet 00:11:5B:60:27:C7;
> fixed-address 192.168.0.29;}
>
> host operatorul {
> hardware ethernet 00:0A:E6:AE:82:8F;
> fixed-address 192.168.0.30;}
>
>
> }
>
> subnet 192.168.0.32 netmask 255.255.255.248
> {
> option subnet-mask 255.255.255.248;
> deny client-updates;
> deny unknown-clients;
> allow booting;
> allow bootp;
> next-server 192.168.3.1;
> filename "/pxelinux.0";
> ping-check true;
> server-identifier 192.168.0.33;
> option domain-name-servers 192.168.0.33, 213.157.167.157;
> option routers 192.168.0.33;
> use-host-decl-names off;
>
> host twilight {
> hardware ethernet 00:11:2F:82:4E:1B;
> fixed-address 192.168.0.34;}
>
> host rambo {
> hardware ethernet 00:D0:B7:09:67:B0;
> fixed-address 192.168.0.35;}
>
> host ilici {
> hardware ethernet 00:02:44:6D:0B:8F;
> fixed-address 192.168.0.36;}
>
>
> }
>
> subnet 192.168.0.40 netmask 255.255.255.248
> {
> option subnet-mask 255.255.255.248;
> deny client-updates;
> deny unknown-clients;
> allow booting;
> allow bootp;
> next-server 192.168.3.1;
> filename "/pxelinux.0";
> ping-check true;
> server-identifier 192.168.0.41;
> option domain-name-servers 192.168.0.41, 213.157.167.157;
> option routers 192.168.0.41;
> use-host-decl-names off;
>
> host zacusca {
> hardware ethernet 00:02:44:85:74:B1;
> fixed-address 192.168.0.44;}
>
>
> }
>
> subnet 192.168.0.48 netmask 255.255.255.248
> {
> option subnet-mask 255.255.255.248;
> deny client-updates;
> deny unknown-clients;
> allow booting;
> allow bootp;
> next-server 192.168.3.1;
> filename "/pxelinux.0";
> ping-check true;
> server-identifier 192.168.0.49;
> option domain-name-servers 192.168.0.49, 213.157.167.157;
> option routers 192.168.0.49;
> use-host-decl-names off;
>
> host indians {
> hardware ethernet 00:0B:6A:B0:3F:04;
> fixed-address 192.168.0.51;}
>
> host indianl {
> hardware ethernet 00:02:3F:21:84:0F;
> fixed-address 192.168.0.51;}
>
> host linkinr {
> hardware ethernet 00:0D:87:BA:23:B8;
> fixed-address 192.168.0.52;}
>
>
> }
>
> subnet 192.168.0.56 netmask 255.255.255.248
> {
> option subnet-mask 255.255.255.248;
> deny client-updates;
> deny unknown-clients;
> allow booting;
> allow bootp;
> next-server 192.168.3.1;
> filename "/pxelinux.0";
> ping-check true;
> server-identifier 192.168.0.57;
> option domain-name-servers 192.168.0.57, 213.157.167.157;
> option routers 192.168.0.57;
> use-host-decl-names off;
>
> host sirjohn {
> hardware ethernet 00:0A:48:19:75:6B;
> fixed-address 192.168.0.59;}
>
> host devil {
> hardware ethernet 02:E0:18:99:88:77;
> fixed-address 192.168.0.60;}
>
> host blizzard {
> hardware ethernet 00:0A:E6:AB:E2:01;
> fixed-address 192.168.0.61;}
>
> host twin {
> hardware ethernet 00:00:39:1B:0B:93;
> fixed-address 192.168.0.62;}
>
>
> }
>
> subnet 192.168.0.64 netmask 255.255.255.248
> {
> option subnet-mask 255.255.255.248;
> deny client-updates;
> deny unknown-clients;
> allow booting;
> allow bootp;
> next-server 192.168.3.1;
> filename "/pxelinux.0";
> ping-check true;
> server-identifier 192.168.0.65;
> option domain-name-servers 192.168.0.65, 213.157.167.157;
> option routers 192.168.0.65;
> use-host-decl-names off;
>
> host giovani1 {
> hardware ethernet 00:0D:87:B8:C7:C0;
> fixed-address 192.168.0.66;}
>
> host giovani2 {
> hardware ethernet 02:60:97:B9:11:2D;
> fixed-address 192.168.0.66;}
>
> host dennis {
> hardware ethernet 00:0D:61:37:3D:DE;
> fixed-address 192.168.0.67;}
>
> host bicker {
> hardware ethernet 00:0A:E4:DC:E7:05;
> fixed-address 192.168.0.68;}
>
> host tano {
> hardware ethernet 00:04:61:53:DA:C3;
> fixed-address 192.168.0.69;}
>
> host oprea {
> hardware ethernet 00:E0:4C:A3:66:5A;
> fixed-address 192.168.0.70;}
>
>
> }
>
> subnet 192.168.0.72 netmask 255.255.255.248
> {
> option subnet-mask 255.255.255.248;
> deny client-updates;
> deny unknown-clients;
> allow booting;
> allow bootp;
> next-server 192.168.3.1;
> filename "/pxelinux.0";
> ping-check true;
> server-identifier 192.168.0.73;
> option domain-name-servers 192.168.0.73, 213.157.167.157;
> option routers 192.168.0.73;
> use-host-decl-names off;
>
> host lex {
> hardware ethernet 00:0D:87:60:0B:9A;
> fixed-address 192.168.0.76;}
>
> host solmyr {
> hardware ethernet 00:01:02:B9:26:D3;
> fixed-address 192.168.0.77;}
>
>
> }
>
> subnet 192.168.0.80 netmask 255.255.255.248
> {
> option subnet-mask 255.255.255.248;
> deny client-updates;
> deny unknown-clients;
> allow booting;
> allow bootp;
> next-server 192.168.3.1;
> filename "/pxelinux.0";
> ping-check true;
> server-identifier 192.168.0.81;
> option domain-name-servers 192.168.0.81, 213.157.167.157;
> option routers 192.168.0.81;
> use-host-decl-names off;
>
> host zozo {
> hardware ethernet 00:0C:6E:DC:22:F2;
> fixed-address 192.168.0.83;}
>
> host nelu {
> hardware ethernet 00:07:95:07:41:A2;
> fixed-address 192.168.0.84;}
>
> host karcsi {
> hardware ethernet 00:50:FC:9D:68:2F;
> fixed-address 192.168.0.85;}
>
>
> }
>
> subnet 192.168.0.88 netmask 255.255.255.248
> {
> option subnet-mask 255.255.255.248;
> deny client-updates;
> deny unknown-clients;
> allow booting;
> allow bootp;
> next-server 192.168.3.1;
> filename "/pxelinux.0";
> ping-check true;
> server-identifier 192.168.0.89;
> option domain-name-servers 192.168.0.89, 213.157.167.157;
> option routers 192.168.0.89;
> use-host-decl-names off;
>
> host draclight {
> hardware ethernet 00:0C:76:59:18:89;
> fixed-address 192.168.0.90;}
>
> host hitman {
> hardware ethernet 00:40:F4:A6:29:F1;
> fixed-address 192.168.0.91;}
>
>
> }
>
> subnet 192.168.0.96 netmask 255.255.255.248
> {
> option subnet-mask 255.255.255.248;
> deny client-updates;
> deny unknown-clients;
> allow booting;
> allow bootp;
> next-server 192.168.3.1;
> filename "/pxelinux.0";
> ping-check true;
> server-identifier 192.168.0.97;
> option domain-name-servers 192.168.0.97, 213.157.167.157;
> option routers 192.168.0.97;
> use-host-decl-names off;
>
> host sniper {
> hardware ethernet 00:02:B3:8E:87:49;
> fixed-address 192.168.0.98;}
>
> host dody {
> hardware ethernet 00:08:0D:DC:45:FD;
> fixed-address 192.168.0.99;}
>
> host marius {
> hardware ethernet 00:13:D4:3D:64:12;
> fixed-address 192.168.0.101;}
>
>
> }
>
> } # shared-network
>
>
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