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Hello Team,
I am working on a problem with my ISC DCHP Version 4.4 server for IPv6 from last few days, But I could not found a solution or root cause. So I hope someone could help me.
Problem : server not responding with IP details for relay
request with selection of class option [ option 18].
It works fine when we comment out on class condition.
From wireshark print, This interface id will inserted by an
relay agent [ “TESTING;”].
Please guide us how to collect debug logs with debug enable
or any configuration error or installation steps. Platform is Centos7.
Configuration file
[root@localhost dhcp]# cat dhcpd6.conf
#
# DHCPv6 Server Configuration
file.
# see /usr/share/doc/dhcp*/dhcpd6.conf.example
# see dhcpd.conf(5) man page
authoritative;
default-lease-time 86400;
max-lease-time 86400;
allow leasequery;
log-facility local7;
class "team" {
match if substring (option
dhcp6.interface-id, 0, 8) = "TESTING;";
}
subnet6 3001:db8:100:f101::0/64
{
pool6 {
log(info, option dhcp6.interface-id);
range6 3001:db8:100:f101::0:100
3001:db8:100:f101::0:1FF;
allow members of "team";
}
}
[root@localhost dhcp]#
[root@localhost /]# /usr/local/sbin/dhcpd -6 -d -lf
/var/db/dhcp.leases -cf /etc/dhcp/dhcpd6.conf eno1
Internet Systems Consortium DHCP
Server 4.4.1
Copyright 2004-2018 Internet
Systems Consortium.
All rights reserved.
For info, please visit
https://www.isc.org/software/dhcp/
Config file:
/etc/dhcp/dhcpd6.conf
Database file:
/var/db/dhcp.leases
PID file: /var/run/dhcpd6.pid
Wrote 0 class decls to leases
file.
Wrote 0 NA, 0 TA, 0 PD leases to
lease file.
Bound to *:547
Listening on
Socket/5/eno1/3001:db8:100:f101::/64
Sending on Socket/5/eno1/3001:db8:100:f101::/64
Server starting service.
Relay-forward message from
3001:db8:100:f101:62a8:feff:feab:5500 port 547, link address
3001:db8:100:f101:62a8:feff:feab:5500, peer address fe80::208:2ff:fe01:1
Unable to pick client address: no addresses available - shared network 3001:db8:100:f101::/64: 0 total,
0 active, 0 abandoned
Sending Relay-reply to
3001:db8:100:f101:62a8:feff:feab:5500 port 547
Relay-forward message from
3001:db8:100:f101:62a8:feff:feab:5500 port 547, link address
3001:db8:100:f101:62a8:feff:feab:5500, peer address fe80::208:2ff:fe01:1
Unable to pick client address: no addresses available - shared network 3001:db8:100:f101::/64: 0
total, 0 active, 0 abandoned
Sending Relay-reply to
3001:db8:100:f101:62a8:feff:feab:5500 port 547
Wireshark Logs attached:
![]()
Let us know any further information required, we are doing
first time with IPv6. IPv4 is fine and class options are working.
Thanks
Guru
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https://lists.isc.org/mailman/listinfo/dhcp-users
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On Tue, 6 Nov 2018 21:32:32 +0530
PaviGuru Pavithragurumurthy < [hidden email]> wrote:
>"TESTING;";
Responding only because I see no one else has.
is that extra semicolon inside the quotes desired? I have never setup
an ipv6 dhcp server, so I'm likely no help to you, but sometimes it's
something that silly.
maybe do a substring 7 chars and match to "TESTING" to see if that
semicolon is somehow biting you?
Good Luck!
--
Regards,
Christopher
_______________________________________________
dhcp-users mailing list
[hidden email]
https://lists.isc.org/mailman/listinfo/dhcp-users
|
|
|
Thanks for the response,
Could you check on config file, the configured parameter are
correct and responseding text shows matching was not found. I’m bit concern on
here. None of other matching not working. i have tested multiple combination of characters, but every time fail with same indication.
NOTE: We have
tested DHCPv4 relay server with same relay agent with IPv4 working fine !!. with
DHCPv6 has concern.
In our relay always ending with semicolon like "TESTING;",
TETSING can change to any character.
Test#1: DHCPv6 relay sending with option 18 interface id
with “TESTING;”
Config
file changes: relay sending with 8 ASCII character [TESTING;] , as from
wireshark.
class "team"
{
match if substring (option dhcp6.interface-id, 0, 7) = "TESTING";
}
subnet6
3001:db8:100:f101::0/64 {
pool6 {
log(info, option dhcp6.interface-id);
range6 3001:db8:100:f101::0:100 3001:db8:100:f101::0:1FF;
allow members of "team";
}
}
Result : same indication as
earlier.
Unable to pick client address:
no addresses available - shared network 3001:db8:100:f101::/64: 0
total, 0 active, 0 abandoned
Test#2: DHCPv6 relay
sending with option 18 interface id with “GURU;”
Config
file changes: relay sending with 8 ASCII character [GURU;] , as from wireshark.
class "team"
{
match if substring (option dhcp6.interface-id, 0, 5) = "GURU;";
}
subnet6
3001:db8:100:f101::0/64 {
pool6 {
log(info, option dhcp6.interface-id);
range6 3001:db8:100:f101::0:100 3001:db8:100:f101::0:1FF;
allow members of "team";
}
}
Result : same indication as
earlier.
Unable to pick client address:
no addresses available - shared network 3001:db8:100:f101::/64: 0
total, 0 active, 0 abandoned
Thanks Guru
On Wed, Nov 7, 2018 at 7:39 AM Christopher Barry < [hidden email]> wrote: On Tue, 6 Nov 2018 21:32:32 +0530
PaviGuru Pavithragurumurthy <[hidden email]> wrote:
>"TESTING;";
Responding only because I see no one else has.
is that extra semicolon inside the quotes desired? I have never setup
an ipv6 dhcp server, so I'm likely no help to you, but sometimes it's
something that silly.
maybe do a substring 7 chars and match to "TESTING" to see if that
semicolon is somehow biting you?
Good Luck!
--
Regards,
Christopher
_______________________________________________
dhcp-users mailing list
[hidden email]
https://lists.isc.org/mailman/listinfo/dhcp-users
|
|
|
> match if substring (option dhcp6.interface-id, 0, 5) = "GURU;";
interface id option is relay-forw message type option.
but dhcp6.interface-id represents the Relay Message options in options.
if host-identifier can use v6relopt.
sample:
host {
host-identifier v6relopt 1 dhcp6.interface-id 01:00:00:00; ...
but match if syntax does not seem to support.
Good luck!
Thanks for the response,
Could you check on config file, the configured parameter are
correct and responseding text shows matching was not found. I’m bit concern on
here. None of other matching not working. i have tested multiple combination of characters, but every time fail with same indication.
NOTE: We have
tested DHCPv4 relay server with same relay agent with IPv4 working fine !!. with
DHCPv6 has concern.
In our relay always ending with semicolon like "TESTING;",
TETSING can change to any character.
Test#1: DHCPv6 relay sending with option 18 interface id
with “TESTING;”
Config
file changes: relay sending with 8 ASCII character [TESTING;] , as from
wireshark.
class "team"
{
match if substring (option dhcp6.interface-id, 0, 7) = "TESTING";
}
subnet6
3001:db8:100:f101::0/64 {
pool6 {
log(info, option dhcp6.interface-id);
range6 3001:db8:100:f101::0:100 3001:db8:100:f101::0:1FF;
allow members of "team";
}
}
Result : same indication as
earlier.
Unable to pick client address:
no addresses available - shared network 3001:db8:100:f101::/64: 0
total, 0 active, 0 abandoned
Test#2: DHCPv6 relay
sending with option 18 interface id with “GURU;”
Config
file changes: relay sending with 8 ASCII character [GURU;] , as from wireshark.
class "team"
{
match if substring (option dhcp6.interface-id, 0, 5) = "GURU;";
}
subnet6
3001:db8:100:f101::0/64 {
pool6 {
log(info, option dhcp6.interface-id);
range6 3001:db8:100:f101::0:100 3001:db8:100:f101::0:1FF;
allow members of "team";
}
}
Result : same indication as
earlier.
Unable to pick client address:
no addresses available - shared network 3001:db8:100:f101::/64: 0
total, 0 active, 0 abandoned
Thanks Guru
On Wed, Nov 7, 2018 at 7:39 AM Christopher Barry < [hidden email]> wrote: On Tue, 6 Nov 2018 21:32:32 +0530
PaviGuru Pavithragurumurthy <[hidden email]> wrote:
>"TESTING;";
Responding only because I see no one else has.
is that extra semicolon inside the quotes desired? I have never setup
an ipv6 dhcp server, so I'm likely no help to you, but sometimes it's
something that silly.
maybe do a substring 7 chars and match to "TESTING" to see if that
semicolon is somehow biting you?
Good Luck!
--
Regards,
Christopher
dhcp-users mailing list
[hidden email]
https://lists.isc.org/mailman/listinfo/dhcp-users
-- _______________________________________________
dhcp-users mailing list
[hidden email]
https://lists.isc.org/mailman/listinfo/dhcp-users
|
|
|
Hi,
Thanks for the response,
Yes, we need to match incoming values vs configured
parameter on relay server, if both are matches allow these IP’s [ as per dhcpd6
configuration file]
We received message from relay agent : DHCPv6 Message type:
Relay-forw (12) with Option: Interface-Id (18) [ with name “TESTING;”]
So we have configured class condition to meet these incoming
requirement. i.e. matching with TESTING; [ using class option ]
could you share
config file with v6relopt to match our need, attached pcap collected at relay
server.
where we need to place this match. It helps me a lot !!!.
first time looking with IPv6.
/etc/dhcp/dhcpd6.conf [ old
configuration]
class "team" {
# match if substring (option
dhcp6.remote-id, 0, 8) = "TESTING;";
match if substring (option
dhcp6.interface-id, 0, 8) = "TESTING|";
}
subnet6 3001:db8:100:f101::0/64
{
pool6 {
allow members of "team";
range6 3001:db8:100:f101::0:100
3001:db8:100:f101::0:1FF;
}
}
NOTE:
Same Configuration type we used on DHCPv4 relay server and
is working fine. So I used same format in DHCPv6 relay server.
[root@localhost dhcp]# cat DHCPv4_Relay_server
#
# DHCP Server Configuration
file.
# see /usr/share/doc/dhcp*/dhcpd.conf.example
# see dhcpd.conf(5) man page
#
authoritative;
log-facility local7;
option ipaddress code 43 =
ip-address;
default-lease-time 86400;
class "VLAN242" {
match if(
(substring (option
agent.circuit-id,0,7) = "AC220m;")
);
}
shared-network
"DHCPrelay" {
subnet 10.43.45.0 netmask
255.255.255.0{
option routers 10.43.45.1;
}
subnet 192.242.0.0 netmask
255.255.252.0{
option routers 192.242.0.1;
}
pool {
allow members of
"VLAN242";
range 192.242.0.11
192.242.3.254;
option subnet-mask
255.255.252.0;
option routers 192.242.0.1;
}
}
[root@localhost dhcp]#
Thanks Guru
On Wed, Nov 7, 2018 at 2:33 PM yoshihiko fujita < [hidden email]> wrote: > match if substring (option dhcp6.interface-id, 0, 5) = "GURU;";
interface id option is relay-forw message type option.
but dhcp6.interface-id represents the Relay Message options in options.
if host-identifier can use v6relopt.
sample:
host {
host-identifier v6relopt 1 dhcp6.interface-id 01:00:00:00; ...
but match if syntax does not seem to support.
Good luck!
Thanks for the response,
Could you check on config file, the configured parameter are
correct and responseding text shows matching was not found. I’m bit concern on
here. None of other matching not working. i have tested multiple combination of characters, but every time fail with same indication.
NOTE: We have
tested DHCPv4 relay server with same relay agent with IPv4 working fine !!. with
DHCPv6 has concern.
In our relay always ending with semicolon like "TESTING;",
TETSING can change to any character.
Test#1: DHCPv6 relay sending with option 18 interface id
with “TESTING;”
Config
file changes: relay sending with 8 ASCII character [TESTING;] , as from
wireshark.
class "team"
{
match if substring (option dhcp6.interface-id, 0, 7) = "TESTING";
}
subnet6
3001:db8:100:f101::0/64 {
pool6 {
log(info, option dhcp6.interface-id);
range6 3001:db8:100:f101::0:100 3001:db8:100:f101::0:1FF;
allow members of "team";
}
}
Result : same indication as
earlier.
Unable to pick client address:
no addresses available - shared network 3001:db8:100:f101::/64: 0
total, 0 active, 0 abandoned
Test#2: DHCPv6 relay
sending with option 18 interface id with “GURU;”
Config
file changes: relay sending with 8 ASCII character [GURU;] , as from wireshark.
class "team"
{
match if substring (option dhcp6.interface-id, 0, 5) = "GURU;";
}
subnet6
3001:db8:100:f101::0/64 {
pool6 {
log(info, option dhcp6.interface-id);
range6 3001:db8:100:f101::0:100 3001:db8:100:f101::0:1FF;
allow members of "team";
}
}
Result : same indication as
earlier.
Unable to pick client address:
no addresses available - shared network 3001:db8:100:f101::/64: 0
total, 0 active, 0 abandoned
Thanks Guru
On Wed, Nov 7, 2018 at 7:39 AM Christopher Barry < [hidden email]> wrote: On Tue, 6 Nov 2018 21:32:32 +0530
PaviGuru Pavithragurumurthy <[hidden email]> wrote:
>"TESTING;";
Responding only because I see no one else has.
is that extra semicolon inside the quotes desired? I have never setup
an ipv6 dhcp server, so I'm likely no help to you, but sometimes it's
something that silly.
maybe do a substring 7 chars and match to "TESTING" to see if that
semicolon is somehow biting you?
Good Luck!
--
Regards,
Christopher
dhcp-users mailing list
[hidden email]
https://lists.isc.org/mailman/listinfo/dhcp-users
--
dhcp-users mailing list
[hidden email]
https://lists.isc.org/mailman/listinfo/dhcp-users
_______________________________________________
dhcp-users mailing list
[hidden email]
https://lists.isc.org/mailman/listinfo/dhcp-users
|
|
|
Hello Team,
Looking for the solution, Please provide a dhcpd6.conf file
to make our requirement work.
- Getting
Relay forward message from relay agent with “interface-id = TESTING;”
- Server
has to allocate IP pool based on “interface-id” from Relay forward message.
- Below
conf used, but server indicates that matching was not found.
- Team
suggested to add option **host-identifier v6relopt 1
dhcp6.interface-id "TESTING;"; **
- But
I’m not able place above format in config
file. Is possible to provide config file. I have tried it, but no susses.
Same issue was reported.
https://lists.isc.org/pipermail/dhcp-users/2017-June/020645.html
Config file:
## where we need to
add host-identifier v6relopt 1 dhcp6.interface-id "TESTING;";
class "team"
{
#
match if substring (option dhcp6.remote-id, 0, 8) = "TESTING;";
match if substring (option dhcp6.interface-id, 0, 8) = "TESTING|";
}
subnet6
3001:db8:100:f101::0/64 {
pool6 {
allow members of "team";
range6 3001:db8:100:f101::0:100 3001:db8:100:f101::0:1FF;
}
}
Thanks
Guru
On Wed, Nov 7, 2018 at 4:12 PM PaviGuru Pavithragurumurthy < [hidden email]> wrote:
Hi,
Thanks for the response,
Yes, we need to match incoming values vs configured
parameter on relay server, if both are matches allow these IP’s [ as per dhcpd6
configuration file]
We received message from relay agent : DHCPv6 Message type:
Relay-forw (12) with Option: Interface-Id (18) [ with name “TESTING;”]
So we have configured class condition to meet these incoming
requirement. i.e. matching with TESTING; [ using class option ]
could you share
config file with v6relopt to match our need, attached pcap collected at relay
server.
where we need to place this match. It helps me a lot !!!.
first time looking with IPv6.
/etc/dhcp/dhcpd6.conf [ old
configuration]
class "team" {
# match if substring (option
dhcp6.remote-id, 0, 8) = "TESTING;";
match if substring (option
dhcp6.interface-id, 0, 8) = "TESTING|";
}
subnet6 3001:db8:100:f101::0/64
{
pool6 {
allow members of "team";
range6 3001:db8:100:f101::0:100
3001:db8:100:f101::0:1FF;
}
}
NOTE:
Same Configuration type we used on DHCPv4 relay server and
is working fine. So I used same format in DHCPv6 relay server.
[root@localhost dhcp]# cat DHCPv4_Relay_server
#
# DHCP Server Configuration
file.
# see /usr/share/doc/dhcp*/dhcpd.conf.example
# see dhcpd.conf(5) man page
#
authoritative;
log-facility local7;
option ipaddress code 43 =
ip-address;
default-lease-time 86400;
class "VLAN242" {
match if(
(substring (option
agent.circuit-id,0,7) = "AC220m;")
);
}
shared-network
"DHCPrelay" {
subnet 10.43.45.0 netmask
255.255.255.0{
option routers 10.43.45.1;
}
subnet 192.242.0.0 netmask
255.255.252.0{
option routers 192.242.0.1;
}
pool {
allow members of
"VLAN242";
range 192.242.0.11
192.242.3.254;
option subnet-mask
255.255.252.0;
option routers 192.242.0.1;
}
}
[root@localhost dhcp]#
Thanks Guru
On Wed, Nov 7, 2018 at 2:33 PM yoshihiko fujita < [hidden email]> wrote: > match if substring (option dhcp6.interface-id, 0, 5) = "GURU;";
interface id option is relay-forw message type option.
but dhcp6.interface-id represents the Relay Message options in options.
if host-identifier can use v6relopt.
sample:
host {
host-identifier v6relopt 1 dhcp6.interface-id 01:00:00:00; ...
but match if syntax does not seem to support.
Good luck!
Thanks for the response,
Could you check on config file, the configured parameter are
correct and responseding text shows matching was not found. I’m bit concern on
here. None of other matching not working. i have tested multiple combination of characters, but every time fail with same indication.
NOTE: We have
tested DHCPv4 relay server with same relay agent with IPv4 working fine !!. with
DHCPv6 has concern.
In our relay always ending with semicolon like "TESTING;",
TETSING can change to any character.
Test#1: DHCPv6 relay sending with option 18 interface id
with “TESTING;”
Config
file changes: relay sending with 8 ASCII character [TESTING;] , as from
wireshark.
class "team"
{
match if substring (option dhcp6.interface-id, 0, 7) = "TESTING";
}
subnet6
3001:db8:100:f101::0/64 {
pool6 {
log(info, option dhcp6.interface-id);
range6 3001:db8:100:f101::0:100 3001:db8:100:f101::0:1FF;
allow members of "team";
}
}
Result : same indication as
earlier.
Unable to pick client address:
no addresses available - shared network 3001:db8:100:f101::/64: 0
total, 0 active, 0 abandoned
Test#2: DHCPv6 relay
sending with option 18 interface id with “GURU;”
Config
file changes: relay sending with 8 ASCII character [GURU;] , as from wireshark.
class "team"
{
match if substring (option dhcp6.interface-id, 0, 5) = "GURU;";
}
subnet6
3001:db8:100:f101::0/64 {
pool6 {
log(info, option dhcp6.interface-id);
range6 3001:db8:100:f101::0:100 3001:db8:100:f101::0:1FF;
allow members of "team";
}
}
Result : same indication as
earlier.
Unable to pick client address:
no addresses available - shared network 3001:db8:100:f101::/64: 0
total, 0 active, 0 abandoned
Thanks Guru
On Wed, Nov 7, 2018 at 7:39 AM Christopher Barry < [hidden email]> wrote: On Tue, 6 Nov 2018 21:32:32 +0530
PaviGuru Pavithragurumurthy <[hidden email]> wrote:
>"TESTING;";
Responding only because I see no one else has.
is that extra semicolon inside the quotes desired? I have never setup
an ipv6 dhcp server, so I'm likely no help to you, but sometimes it's
something that silly.
maybe do a substring 7 chars and match to "TESTING" to see if that
semicolon is somehow biting you?
Good Luck!
--
Regards,
Christopher
dhcp-users mailing list
[hidden email]
https://lists.isc.org/mailman/listinfo/dhcp-users
--
dhcp-users mailing list
[hidden email]
https://lists.isc.org/mailman/listinfo/dhcp-users
_______________________________________________
dhcp-users mailing list
[hidden email]
https://lists.isc.org/mailman/listinfo/dhcp-users
|
|
|
Hello,
Thanks for your valuable input. DHCPv6 Option 18 Interface-id it worked.
IP allocation is working if match found, else no IP
allocation.
Dhcpd6.conf
class "team" {
match if(
(substring (v6relay(1, option
dhcp6.interface-id), 0, 8) = "TESTING|")
);
}
subnet6 3001:db8:100:f101::0/64 {
pool6 {
allow members of "team";
range6 3001:db8:100:f101::0:100
3001:db8:100:f101::0:1FF;
}
}
root@tester:/home/tester#
dhcpd -6 -cf /etc/dhcp/dhcpd6.conf -lf /var/lib/dhcp/dhcpd6.leases eth0 -d
Internet Systems Consortium DHCP
Server 4.4.1
Copyright 2004-2018 Internet
Systems Consortium.
All rights reserved.
For info, please visit
https://www.isc.org/software/dhcp/
Config file:
/etc/dhcp/dhcpd6.conf
Database file:
/var/lib/dhcp/dhcpd6.leases
PID file: /var/run/dhcpd6.pid
Wrote 0 class decls to leases
file.
Wrote 4 NA, 0 TA, 0 PD leases to
lease file.
Bound to *:547
Listening on
Socket/5/eth0/3001:db8:100:f101::/64
Sending on Socket/5/eth0/3001:db8:100:f101::/64
Server starting service.
Relay-forward message from
3001:db8:100:f101:62a8:feff:feab:5500 port 547, link address 3001:db8:100:f101:62a8:feff:feab:5500,
peer address fe80::208:2ff:fe01:1
Advertise NA: address
3001:db8:100:f101::103 to client with duid
00:01:00:01:00:00:00:00:00:08:02:01:00:01 iaid = 141616593 valid for 86400
seconds
Sending Relay-reply to
3001:db8:100:f101:62a8:feff:feab:5500 port 547
Relay-forward message from
3001:db8:100:f101:62a8:feff:feab:5500 port 547, link address
3001:db8:100:f101:62a8:feff:feab:5500, peer address fe80::208:2ff:fe01:1
Reply NA: address
3001:db8:100:f101::103 to client with duid
00:01:00:01:00:00:00:00:00:08:02:01:00:01 iaid = 141616593 valid for 86400
seconds
Reusing lease for:
3001:db8:100:f101::103, age 19572 secs < 25%, sending shortened lifetimes -
preferred: 34428, valid 66828
Sending Relay-reply to
3001:db8:100:f101:62a8:feff:feab:5500 port 547
For Option 37
_remote ID
IP allocation is not working, I used same way of
interface-id. But match got failed. I assume there is no changes on config
file. It should work !!. any clue ?
Attached pcap DHCPv6_Match_remote-ID.pcap
Dhcpd6.conf
class "team" {
match if(
(substring (v6relay(1, option dhcp6.remote-id),
0, 8) = "TESTING|")
);
}
subnet6 3001:db8:100:f101::0/64 {
pool6 {
allow members of "team";
range6 3001:db8:100:f101::0:100
3001:db8:100:f101::0:1FF;
}
}
root@tester:/home/tester#
dhcpd -6 -cf /etc/dhcp/dhcpd6.conf -lf /var/lib/dhcp/dhcpd6.leases eth0 -d
Internet Systems Consortium DHCP
Server 4.4.1
Copyright 2004-2018 Internet
Systems Consortium.
All rights reserved.
For info, please visit
https://www.isc.org/software/dhcp/
Config file:
/etc/dhcp/dhcpd6.conf
Database file:
/var/lib/dhcp/dhcpd6.leases
PID file: /var/run/dhcpd6.pid
Wrote 0 class decls to leases
file.
Wrote 0 NA, 0 TA, 0 PD leases to
lease file.
Bound to *:547
Listening on
Socket/5/eth0/3001:db8:100:f101::/64
Sending on Socket/5/eth0/3001:db8:100:f101::/64
Server starting service.
Relay-forward message from
3001:db8:100:f101:62a8:feff:feab:5500 port 547, link address
3001:db8:100:f101:62a8:feff:feab:5500, peer address fe80::208:2ff:fe01:1
Unable to pick client address: no addresses available - shared network 3001:db8:100:f101::/64: 0
total, 0 active, 0 abandoned
Sending Relay-reply to
3001:db8:100:f101:62a8:feff:feab:5500 port 547
Relay-forward message from
3001:db8:100:f101:62a8:feff:feab:5500 port 547, link address
3001:db8:100:f101:62a8:feff:feab:5500, peer address fe80::208:2ff:fe01:1
Unable to pick client address: no addresses available - shared network 3001:db8:100:f101::/64: 0
total, 0 active, 0 abandoned
Sending Relay-reply to
3001:db8:100:f101:62a8:feff:feab:5500 port 547
Relay-forward message from
3001:db8:100:f101:62a8:feff:feab:5500 port 547, link address
3001:db8:100:f101:62a8:feff:feab:5500, peer address fe80::208:2ff:fe01:1
Unable to pick client address:
no addresses available - shared network
3001:db8:100:f101::/64: 0 total, 0 active,
0 abandoned
Sending Relay-reply to
3001:db8:100:f101:62a8:feff:feab:5500 port 547
Relay-forward message from
3001:db8:100:f101:62a8:feff:feab:5500 port 547, link address
3001:db8:100:f101:62a8:feff:feab:5500, peer address fe80::208:2ff:fe01:1
Unable to pick client address:
no addresses available - shared network
3001:db8:100:f101::/64: 0 total, 0 active,
0 abandoned
Sending Relay-reply to
3001:db8:100:f101:62a8:feff:feab:5500 port 547
Thanks
Guru
_______________________________________________
dhcp-users mailing list
[hidden email]
https://lists.isc.org/mailman/listinfo/dhcp-users
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Hello,
DHCPv6 relay with option 37 is working after modification of
matching to the location number. just after the Value Enterprise ID with range of 4. So extended to 4th
location. it worked!!.
Remote Identifier
Option: Remote
Identifier (37)
Length: 36
Value: 0000303a30383a30323a...
Enterprise ID:
<<< 4 >>>
Remote-ID: 123454755...
The format of the DHCPv6 Relay Agent Remote-ID option is shown below:
0
1 2 3
0 1 2
3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| OPTION_REMOTE_ID | option-len |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| enterprise-number |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
.
.
. remote-id .
.
.
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Config File
class "team" {
match if(
(substring
(v6relay(1, option dhcp6.remote-id), 4, 8) = "TESTING|")
);
}
subnet6 3001:db8:100:f101::0/64 {
pool6 {
allow members of
"team";
range6
3001:db8:100:f101::0:100 3001:db8:100:f101::0:1FF;
}
}
Thanks Guru
On Thu, Nov 8, 2018 at 8:29 PM PaviGuru Pavithragurumurthy < [hidden email]> wrote:
Hello,
Thanks for your valuable input. DHCPv6 Option 18 Interface-id it worked.
IP allocation is working if match found, else no IP
allocation.
Dhcpd6.conf
class "team" {
match if(
(substring (v6relay(1, option
dhcp6.interface-id), 0, 8) = "TESTING|")
);
}
subnet6 3001:db8:100:f101::0/64 {
pool6 {
allow members of "team";
range6 3001:db8:100:f101::0:100
3001:db8:100:f101::0:1FF;
}
}
root@tester:/home/tester#
dhcpd -6 -cf /etc/dhcp/dhcpd6.conf -lf /var/lib/dhcp/dhcpd6.leases eth0 -d
Internet Systems Consortium DHCP
Server 4.4.1
Copyright 2004-2018 Internet
Systems Consortium.
All rights reserved.
For info, please visit
https://www.isc.org/software/dhcp/
Config file:
/etc/dhcp/dhcpd6.conf
Database file:
/var/lib/dhcp/dhcpd6.leases
PID file: /var/run/dhcpd6.pid
Wrote 0 class decls to leases
file.
Wrote 4 NA, 0 TA, 0 PD leases to
lease file.
Bound to *:547
Listening on
Socket/5/eth0/3001:db8:100:f101::/64
Sending on Socket/5/eth0/3001:db8:100:f101::/64
Server starting service.
Relay-forward message from
3001:db8:100:f101:62a8:feff:feab:5500 port 547, link address 3001:db8:100:f101:62a8:feff:feab:5500,
peer address fe80::208:2ff:fe01:1
Advertise NA: address
3001:db8:100:f101::103 to client with duid
00:01:00:01:00:00:00:00:00:08:02:01:00:01 iaid = 141616593 valid for 86400
seconds
Sending Relay-reply to
3001:db8:100:f101:62a8:feff:feab:5500 port 547
Relay-forward message from
3001:db8:100:f101:62a8:feff:feab:5500 port 547, link address
3001:db8:100:f101:62a8:feff:feab:5500, peer address fe80::208:2ff:fe01:1
Reply NA: address
3001:db8:100:f101::103 to client with duid
00:01:00:01:00:00:00:00:00:08:02:01:00:01 iaid = 141616593 valid for 86400
seconds
Reusing lease for:
3001:db8:100:f101::103, age 19572 secs < 25%, sending shortened lifetimes -
preferred: 34428, valid 66828
Sending Relay-reply to
3001:db8:100:f101:62a8:feff:feab:5500 port 547
For Option 37
_remote ID
IP allocation is not working, I used same way of
interface-id. But match got failed. I assume there is no changes on config
file. It should work !!. any clue ?
Attached pcap DHCPv6_Match_remote-ID.pcap
Dhcpd6.conf
class "team" {
match if(
(substring (v6relay(1, option dhcp6.remote-id),
0, 8) = "TESTING|")
);
}
subnet6 3001:db8:100:f101::0/64 {
pool6 {
allow members of "team";
range6 3001:db8:100:f101::0:100
3001:db8:100:f101::0:1FF;
}
}
root@tester:/home/tester#
dhcpd -6 -cf /etc/dhcp/dhcpd6.conf -lf /var/lib/dhcp/dhcpd6.leases eth0 -d
Internet Systems Consortium DHCP
Server 4.4.1
Copyright 2004-2018 Internet
Systems Consortium.
All rights reserved.
For info, please visit
https://www.isc.org/software/dhcp/
Config file:
/etc/dhcp/dhcpd6.conf
Database file:
/var/lib/dhcp/dhcpd6.leases
PID file: /var/run/dhcpd6.pid
Wrote 0 class decls to leases
file.
Wrote 0 NA, 0 TA, 0 PD leases to
lease file.
Bound to *:547
Listening on
Socket/5/eth0/3001:db8:100:f101::/64
Sending on Socket/5/eth0/3001:db8:100:f101::/64
Server starting service.
Relay-forward message from
3001:db8:100:f101:62a8:feff:feab:5500 port 547, link address
3001:db8:100:f101:62a8:feff:feab:5500, peer address fe80::208:2ff:fe01:1
Unable to pick client address: no addresses available - shared network 3001:db8:100:f101::/64: 0
total, 0 active, 0 abandoned
Sending Relay-reply to
3001:db8:100:f101:62a8:feff:feab:5500 port 547
Relay-forward message from
3001:db8:100:f101:62a8:feff:feab:5500 port 547, link address
3001:db8:100:f101:62a8:feff:feab:5500, peer address fe80::208:2ff:fe01:1
Unable to pick client address: no addresses available - shared network 3001:db8:100:f101::/64: 0
total, 0 active, 0 abandoned
Sending Relay-reply to
3001:db8:100:f101:62a8:feff:feab:5500 port 547
Relay-forward message from
3001:db8:100:f101:62a8:feff:feab:5500 port 547, link address
3001:db8:100:f101:62a8:feff:feab:5500, peer address fe80::208:2ff:fe01:1
Unable to pick client address:
no addresses available - shared network
3001:db8:100:f101::/64: 0 total, 0 active,
0 abandoned
Sending Relay-reply to
3001:db8:100:f101:62a8:feff:feab:5500 port 547
Relay-forward message from
3001:db8:100:f101:62a8:feff:feab:5500 port 547, link address
3001:db8:100:f101:62a8:feff:feab:5500, peer address fe80::208:2ff:fe01:1
Unable to pick client address:
no addresses available - shared network
3001:db8:100:f101::/64: 0 total, 0 active,
0 abandoned
Sending Relay-reply to
3001:db8:100:f101:62a8:feff:feab:5500 port 547
Thanks
Guru
_______________________________________________
dhcp-users mailing list
[hidden email]
https://lists.isc.org/mailman/listinfo/dhcp-users
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DHCPv6_Match_Interface-ID.pcap (38K) Download Attachment