Hello,

I am introducing the Freeradius as DHCP server at my ISP and am experiencing problems with some vendors specifically routers TP-Link.

The FreeRadius allocates the IP Router but unable to associate the IP offered by freeradius, what intrigues me is that the problem does not occur with the ISC-DHCP.

FreeRADIUS Version 2.2.4 (git #14e1ee7)

Follow my configuration and Debug.

server dhcp {

listen {

type = dhcp

ipaddr = XXX.XXX.0.26

port = 67

interface = eth0

broadcast = no

}

dhcp DHCP-Discover {

update reply {

DHCP-Message-Type = DHCP-Offer

}

update reply {

DHCP-Domain-Name-Server = XXX.XXX.0.6

DHCP-Domain-Name-Server = XXX.XXX.0.250

DHCP-IP-Address-Lease-Time = 120

DHCP-DHCP-Server-Identifier = XXX.XXX.0.26

}

sql.authorize

dhcp_sqlippool

sql.post-auth

}

dhcp DHCP-Request {

update reply {

DHCP-Message-Type = DHCP-Ack

}

update reply {

DHCP-Domain-Name-Server = XXX.XXX.0.6

DHCP-Domain-Name-Server = XXX.XXX.0.250

DHCP-IP-Address-Lease-Time = 120

DHCP-DHCP-Server-Identifier = XXX.XXX.0.26

}

sql.authorize

dhcp_sqlippool

sql.post-auth

}

dhcp {

reject

}

Ready to process requests.

Received DHCP-Discover of id 7f519348 from 179.127.59.1:67 to 187.85.0.26:67

DHCP-Opcode = Client-Message

DHCP-Hardware-Type = Ethernet

DHCP-Hardware-Address-Length = 6

DHCP-Hop-Count = 1

DHCP-Transaction-Id = 2136052552

DHCP-Number-of-Seconds = 4

DHCP-Flags = Broadcast

DHCP-Client-IP-Address = 0.0.0.0

DHCP-Your-IP-Address = 0.0.0.0

DHCP-Server-IP-Address = 0.0.0.0

DHCP-Gateway-IP-Address = 179.127.59.1

DHCP-Client-Hardware-Address = a0:f3:c1:f3:78:6a

DHCP-Message-Type += DHCP-Discover

DHCP-Client-Identifier += a0:f3:c1:f3:78:6a

DHCP-DHCP-Maximum-Msg-Size += 576

DHCP-Parameter-Request-List += DHCP-Subnet-Mask

DHCP-Parameter-Request-List += DHCP-Router-Address

DHCP-Parameter-Request-List += DHCP-Domain-Name-Server

DHCP-Parameter-Request-List += DHCP-Static-Routes

DHCP-Parameter-Request-List += DHCP-Vendor

DHCP-Parameter-Request-List += DHCP-NETBIOS-Name-Servers

DHCP-Parameter-Request-List += DHCP-NETBIOS-Node-Type

DHCP-Parameter-Request-List += DHCP-NETBIOS

DHCP-Parameter-Request-List += DHCP-Classless-Static-Route

DHCP-Parameter-Request-List += 249

DHCP-Relay-Circuit-Id = "1/1/FHTT-0027b63b"

DHCP-Relay-Remote-Id = ""

server dhcp {

Trying sub-section dhcp DHCP-Discover {...}

+group DHCP-Discover {

++update reply {

++} # update reply = noop

++update reply {

++} # update reply = noop

[sql] expand: %{DHCP-Relay-Circuit-Id} -> 1/1/FHTT-0027b63b

[sql] sql_set_user escaped user --> '1/1/FHTT-0027b63b'

rlm_sql (sql): Reserving sql socket id: 2

[sql] expand: SELECT id, username, attribute, value, op FROM radcheck WHERE username = '%{SQL-User-Name}' ORDER BY id -> SELECT id, username, attribute, value, op FROM radcheck WHERE username = '1/1/FHTT-0027b63b' ORDER BY id

[sql] User found in radcheck table

[sql] expand: SELECT id, username, attribute, value, op FROM radreply WHERE username = '%{SQL-User-Name}' ORDER BY id -> SELECT id, username, attribute, value, op FROM radreply WHERE username = '1/1/FHTT-0027b63b' ORDER BY id

[sql] expand: SELECT groupname FROM radusergroup WHERE username = '%{SQL-User-Name}' ORDER BY priority -> SELECT groupname FROM radusergroup WHERE username = '1/1/FHTT-0027b63b' ORDER BY priority

rlm_sql (sql): Released sql socket id: 2

++[sql.authorize] = ok

++policy dhcp_sqlippool.post-auth {

+++update request {

expand: %{DHCP-Relay-Circuit-Id} -> 1/1/FHTT-0027b63b

expand: %{DHCP-Gateway-IP-Address} -> 179.127.59.1

expand: %{%{DHCP-Gateway-IP-Address}:-127.0.0.1} -> 179.127.59.1

+++} # update request = noop

[dhcp_sqlippool] No Pool-Name defined.

[dhcp_sqlippool] expand: DHCP: No Pool-Name defined (did %{Called-Station-Id} cli %{Calling-Station-Id} port %{NAS-Port} user %{User-Name}) -> DHCP: No Pool-Name defined (did cli 1/1/FHTT-0027b63b port user 1/1/FHTT-0027b63b)

DHCP: No Pool-Name defined (did cli 1/1/FHTT-0027b63b port user 1/1/FHTT-0027b63b)

+++[dhcp_sqlippool] = noop

+++? if (ok)

? Evaluating (ok) -> FALSE

+++? if (ok) -> FALSE

++} # policy dhcp_sqlippool.post-auth = noop

[sql] expand: %{DHCP-Relay-Circuit-Id} -> 1/1/FHTT-0027b63b

[sql] sql_set_user escaped user --> '1/1/FHTT-0027b63b'

[sql] expand: %{User-Password} ->

[sql] ... expanding second conditional

[sql] expand: %{Chap-Password} ->

[sql] expand: INSERT INTO radpostauth (username, pass, reply, authdate) VALUES ( '%{User-Name}', '%{%{User-Password}:-%{Chap-Password}}', '%{reply:Packet-Type}', '%S') -> INSERT INTO radpostauth (username, pass, reply, authdate) VALUES ( '1/1/FHTT-0027b63b', '', '0', '2014-01-12 18:02:18')

rlm_sql (sql) in sql_postauth: query is INSERT INTO radpostauth (username, pass, reply, authdate) VALUES ( '1/1/FHTT-0027b63b', '', '0', '2014-01-12 18:02:18')

rlm_sql (sql): Reserving sql socket id: 1

rlm_sql (sql): Released sql socket id: 1

++[sql.post-auth] = ok

++[ok] = ok

+} # group DHCP-Discover = ok

DHCP: Reply will be unicast to giaddr from original packet

} # server dhcp

Encoding DHCP-Offer of id 7f519348 to 179.127.59.1:67

DHCP-Opcode = Server-Message

DHCP-Hardware-Type = Ethernet

DHCP-Hardware-Address-Length = 6

DHCP-Hop-Count = 1

DHCP-Transaction-Id = 2136052552

DHCP-Number-of-Seconds = 0

DHCP-Flags = Broadcast

DHCP-Client-IP-Address = 0.0.0.0

DHCP-Your-IP-Address = 179.127.59.2

DHCP-Server-IP-Address = 187.85.0.26

DHCP-Gateway-IP-Address = 179.127.59.1

DHCP-Client-Hardware-Address = a0:f3:c1:f3:78:6a

DHCP-Server-Host-Name = ""

DHCP-Boot-Filename = ""

DHCP-Domain-Name-Server = 187.85.0.6

DHCP-Domain-Name-Server = 187.85.0.250

DHCP-IP-Address-Lease-Time = 120

DHCP-DHCP-Server-Identifier = 187.85.0.26

DHCP-DHCP-Maximum-Msg-Size = 576

Sending DHCP-Offer of id 7f519348 to 179.127.59.1:67

Finished request 1.

Thanks.