[Kea-users] [EXTERNAL] RE: No DHCP Reply sent out from kea server
Marek Hajduczenia
mxhajduczenia at gmail.com
Thu May 9 16:06:50 UTC 2024
This is a generic statement telling Kea to send a vendor-4491 space in
reply messages. There are examples of custom vendor spaces in Kea
documentation - this is nothing specific to CableLabs
Marek
On Thu, May 9, 2024 at 10:02 AM Xiao, Yu (CCI-Atlanta) <yu.xiao at cox.com>
wrote:
> Hi Marek,
>
>
>
> Thank you for the information. I am wondering if the following option
> defined by yourself or it is defined by kea? I don’t see its definition in
> the config you shared before.
>
>
>
> {
>
> "space": "dhcp6",
>
> "name": "vendor-opts",
>
> "code": 17,
>
> "data": "4491"
>
> }
>
>
>
>
>
>
>
> Best Regards,
>
> Yu
>
>
>
>
>
> *From: *Marek Hajduczenia <mxhajduczenia at gmail.com>
> *Date: *Wednesday, May 8, 2024 at 5:56 PM
> *To: *Xiao, Yu (CCI-Atlanta) <yu.xiao at cox.com>, 'Kea user's list' <
> kea-users at lists.isc.org>
> *Subject: *Re: [EXTERNAL] RE: [Kea-users] No DHCP Reply sent out from kea
> server
>
> I do not use RPD in v6 mode so I cannot test that but perhaps try to add a
> line at the end of the new statement as follows
>
>
>
> “always-send”: true
>
>
>
> That will force transmission of Option 17 unconditionally if this class is
> matched.
>
>
>
> Marek
>
>
>
> *From: *Xiao, Yu (CCI-Atlanta) <yu.xiao at cox.com>
> *Date: *Wednesday, May 8, 2024 at 2:50 PM
> *To: *mxhajduczenia at gmail.com <mxhajduczenia at gmail.com>, 'Kea user's
> list' <kea-users at lists.isc.org>
> *Subject: *Re: [EXTERNAL] RE: [Kea-users] No DHCP Reply sent out from kea
> server
>
> Hi Marek,
>
>
>
> I have added, but there’s no change. I adjusted the position of this part
> configuration to the top and bottom, but still no change.
>
>
>
>
>
> "client-classes": [
>
> {
>
> "name": "RPD",
>
> "test": "substring(option[17].option[2].hex,0,3) == 'RPD'",
>
> "option-data": [
>
> {
>
> "space": "vendor-4491",
>
> "name": "syslog-servers",
>
> "code": 34,
>
> "data": "2001:578:30:7004:10:0:252:120"
>
> },
>
> {
>
> "space": "vendor-4491",
>
> "name": "time-servers",
>
> "code": 37,
>
> "data": "2001:578:30:7004:10:0:252:112"
>
> },
>
> {
>
> "space": "vendor-4491",
>
> "name": "time-offset",
>
> "code": 38,
>
> "name": "time-offset",
>
> "code": 38,
>
> "data": "0"
>
> },
>
> {
>
> "space": "vendor-4491",
>
> "name": "ccap-cores",
>
> "code": 61,
>
> "data": "2001:578:30:7010:10:0:254:73"
>
> },
>
> {
>
> "space": "dhcp6",
>
> "name": "vendor-opts",
>
> "code": 17,
>
> "data": "4491"
>
> }
>
> ]
>
> }
>
> ],
>
>
>
>
>
>
>
>
>
> Best Regards,
>
> Yu
>
>
>
>
>
> *From: *Xiao, Yu (CCI-Atlanta) <yu.xiao at cox.com>
> *Date: *Wednesday, May 8, 2024 at 4:18 PM
> *To: *mxhajduczenia at gmail.com <mxhajduczenia at gmail.com>, 'Kea user's
> list' <kea-users at lists.isc.org>
> *Subject: *Re: [EXTERNAL] RE: [Kea-users] No DHCP Reply sent out from kea
> server
>
> Thank you, Marek! Let me try!
>
>
>
>
>
>
>
> Best Regards,
>
> Yu
>
>
>
>
>
> *From: *Marek Hajduczenia <mxhajduczenia at gmail.com>
> *Date: *Wednesday, May 8, 2024 at 4:10 PM
> *To: *'Kea user's list' <kea-users at lists.isc.org>
> *Cc: *Xiao, Yu (CCI-Atlanta) <yu.xiao at cox.com>
> *Subject: *[EXTERNAL] RE: [Kea-users] No DHCP Reply sent out from kea
> server
>
> You need to add
>
>
>
>
> {
>
>
> "space": "dhcp6",
>
>
> "name": "vendor-opts",
>
>
> "code": 17,
>
>
> "data": "4491"
>
>
> }
>
>
>
> to your “option-data” stanza. Otherwise, the process will not insert the
> vendor-specific entry in Option 17.
>
>
>
> Marek
>
>
>
> *From:* Kea-users <kea-users-bounces at lists.isc.org> *On Behalf Of *Xiao,
> Yu (CCI-Atlanta) via Kea-users
> *Sent:* Wednesday, May 8, 2024 1:46 PM
> *To:* Kea user's list <kea-users at lists.isc.org>
> *Cc:* Xiao, Yu (CCI-Atlanta) <yu.xiao at cox.com>
> *Subject:* [Kea-users] No DHCP Reply sent out from kea server
>
>
>
> Greetings,
>
>
>
> I configured some sub-options for DHCPv6 Option 17 for RPD use. I didn’t
> find too detailed information regarding how to customize those sub-options
> under one option such as DHCPv6 option 17. Luckily, I found some examples
> from previous discussion email. Before I added those options, I could see
> the Solicit, Advertise, Request and Reply packets between the RPD and DHCP
> server. After the configuration, now I don’t see DHCP server responded to
> the Advertise packets anymore. The Advertise packet was sent. I checked the
> debug logs, I don’t see any reasons why the Advertise packets are not sent.
> There’s no errors in the debug logs.
>
>
>
> I define those options globally while use them under the class but they
> are not working. Then I changed the configuration and use them under global
> configuration, but still no changes. I suspect my customization
> configuration for sub-options have some problem. But I don’t see any issue
> according to manual 9.2.15. DHCPv6 Vendor-Specific Options. Did I miss
> something in the configuration? I also attached my debug settings, not sure
> if there could be more detailed debug logs to help our troubleshooting
> process.
>
>
>
> My kea version is 2.4.1.
>
>
>
>
>
> *Option related Config:*
>
>
>
> # custom definitions
>
> ### DOCSIS space
>
> "option-def": [{
>
> "space": "vendor-4491",
>
> "name": "device-type",
>
> "code": 2,
>
> "type": "string"
>
> },
>
> {
>
> "space": "vendor-4491",
>
> "name": "tftp-servers",
>
> "code": 32,
>
> "array": true,
>
> "type": "ipv6-address"
>
> },
>
> {
>
> "space": "vendor-4491",
>
> "name": "config-file",
>
> "code": 33,
>
> "type": "string"
>
> },
>
> {
>
> "space": "vendor-4491",
>
> "name": "syslog-servers",
>
> "code": 34,
>
> "array": true,
>
> "type": "ipv6-address"
>
> },
>
> {
>
> "space": "vendor-4491",
>
> "name": "time-servers",
>
> "code": 37,
>
> "array": true,
>
> "type": "ipv6-address"
>
> },
>
> {
>
> "space": "vendor-4491",
>
> "name": "time-offset",
>
> "code": 38,
>
> "type": "int32"
>
> },
>
> {
>
> "space": "vendor-4491",
>
> "name": "ccap-cores",
>
> "code": 61,
>
> "array": true,
>
> "type": "ipv6-address"
>
> },
>
> ],
>
>
>
> "client-classes": [
>
> {
>
> "name": "RPD",
>
> "test": "substring(option[17].option[2].hex,0,3) == 'RPD'",
>
> "option-data": [
>
> {
>
> "space": "vendor-4491",
>
> "name": "syslog-servers",
>
> "code": 34,
>
> "csv-format": true,
>
> "data": "2001:391:20:7004:10:0:252:120"
>
> },
>
> {
>
> "space": "vendor-4491",
>
> "name": "time-servers",
>
> "code": 37,
>
> "csv-format": true,
>
> "data": "2001:391:20:7004:10:0:252:112"
>
> },
>
> {
>
> "space": "vendor-4491",
>
> "name": "time-offset",
>
> "code": 38,
>
> "csv-format": true,
>
> "data": "0"
>
> },
>
> {
>
> "space": "vendor-4491",
>
> "name": "ccap-cores",
>
> "code": 61,
>
> "csv-format": true,
>
> "data": "2001:391:20:7010:10:0:254:73"
>
> }
>
> ]
>
> }
>
> ],
>
>
>
> *Debug config:*
>
>
>
> # DHCPv6 configuration ends with the next line
>
>
>
> "loggers": [
>
> {
>
> "name": "kea-dhcp6",
>
> "output_options": [
>
> {
>
> "output": "/tmp/kea-debug.log",
>
> "maxver": 8,
>
> "maxsize": 40480000,
>
> }
>
> ],
>
> "severity": "DEBUG",
>
> "debuglevel": 99
>
> }
>
>
>
> ]
>
>
>
> *Debug logs:*
>
> …
>
> 2024-05-08 14:50:14.577 INFO [kea-dhcp6.leases/27581.139777794037504]
> DHCP6_LEASE_ADVERT duid=[00:03:00:01:c4:b2:39:ba:56:98], tid=0x206da9:
> lease for address 2001:391:20:7716::447 and iaid=1 will be advertised
>
> 2024-05-08 14:50:14.577 DEBUG [kea-dhcp6.leases/27581.139777794037504]
> DHCP6_LEASE_DATA duid=[00:03:00:01:c4:b2:39:ba:56:98], tid=0x206da9:
> detailed lease information for iaid=1: Type: IA_NA(0)
>
> Address: 2001:391:20:7716::447
>
> Prefix length: 128
>
> IAID: 1
>
> Pref life: 300
>
> Valid life: 400
>
> Cltt: 1715193821
>
> DUID: 00:03:00:01:c4:b2:39:ba:56:98
>
> Hardware addr: c4:b2:39:ba:56:98
>
> Subnet ID: 1
>
> Pool ID: 0
>
> State: expired-reclaimed
>
>
>
> 2024-05-08 14:50:14.577 DEBUG [kea-dhcp6.packets/27581.139777794037504]
> DHCP6_PACKET_SEND duid=[00:03:00:01:c4:b2:39:ba:56:98], tid=0x206da9:
> trying to send packet ADVERTISE (type 2) from [2001:391:20:c012::240]:547
> to [2001:391:20:7716::1]:547 on interface ens18
>
> 2024-05-08 14:50:14.577 DEBUG [kea-dhcp6.packets/27581.139777794037504]
> DHCP6_RESPONSE_DATA responding with packet type 2 data is
> localAddr=[2001:391:20:c012::240]:547 remoteAddr=[2001:391:20:7716::1]:547
>
> msgtype=2(ADVERTISE), transid=0x206da9
>
> type=00001, len=00010: 00:03:00:01:c4:b2:39:ba:56:98
>
> type=00002, len=00014: 00:01:00:01:2d:c5:0b:41:b6:0f:80:c4:26:56
>
> type=00003(IA_NA), len=00040: iaid=1, t1=100, t2=200,
>
> options:
>
> type=00005(IAADDR), len=00024: address=2001:391:20:7716::447,
> preferred-lft=300, valid-lft=400
>
> type=39(CLIENT_FQDN), flags: (N=1, O=0, S=0),
> domain-name='rpdc4b239ba5698.' (full)
>
> 1 relay(s):
>
> relay[0]: msg-type=13(RELAY_REPLY), hop-count=0,
>
> link-address=2001:391:20:7716::1, peer-address=fe80::c6b2:39ff:feba:5698, 0
> option(s)
>
> …
>
>
>
>
>
>
>
>
>
> Best Regards,
>
> Yu
>
>
>
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