DHCPNAK
E210667
DHCPNAK is a Dynamic Host Configuration Protocol (DHCP) message type used by a server to indicate that a client's requested or previously assigned IP configuration is invalid or cannot be granted.
All labels observed (2)
| Label | Occurrences |
|---|---|
| DHCPNAK canonical | 3 |
| DHCP Negative Acknowledgment | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1866759 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: DHCPNAK Context triple: [RFC 2131, definesMessageType, DHCPNAK]
-
A.
DHCPDECLINE
DHCPDECLINE is a Dynamic Host Configuration Protocol (DHCP) message sent by a client to inform the server that the offered IP address is already in use or otherwise invalid.
-
B.
DHCPACK
DHCPACK is a Dynamic Host Configuration Protocol (DHCP) message sent by a server to confirm and finalize the configuration parameters (such as IP address and lease time) offered to a client.
-
C.
DHCP
DHCP (Dynamic Host Configuration Protocol) is a network management protocol that automatically assigns IP addresses and other configuration parameters to devices on an IP network.
-
D.
DHCPDISCOVER
DHCPDISCOVER is a Dynamic Host Configuration Protocol (DHCP) message used by a client to locate available DHCP servers and request initial network configuration.
-
E.
BOOTP
BOOTP (Bootstrap Protocol) is an older network protocol used to automatically assign IP addresses and boot configuration to diskless or thin-client machines over a network.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: DHCPNAK Target entity description: DHCPNAK is a Dynamic Host Configuration Protocol (DHCP) message type used by a server to indicate that a client's requested or previously assigned IP configuration is invalid or cannot be granted.
-
A.
DHCPDECLINE
DHCPDECLINE is a Dynamic Host Configuration Protocol (DHCP) message sent by a client to inform the server that the offered IP address is already in use or otherwise invalid.
-
B.
DHCPACK
DHCPACK is a Dynamic Host Configuration Protocol (DHCP) message sent by a server to confirm and finalize the configuration parameters (such as IP address and lease time) offered to a client.
-
C.
DHCP
DHCP (Dynamic Host Configuration Protocol) is a network management protocol that automatically assigns IP addresses and other configuration parameters to devices on an IP network.
-
D.
DHCPDISCOVER
DHCPDISCOVER is a Dynamic Host Configuration Protocol (DHCP) message used by a client to locate available DHCP servers and request initial network configuration.
-
E.
BOOTP
BOOTP (Bootstrap Protocol) is an older network protocol used to automatically assign IP addresses and boot configuration to diskless or thin-client machines over a network.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
DHCP message type
ⓘ
network protocol control message ⓘ |
| abbreviationFor |
DHCP Negative Acknowledgment
ⓘ
linked to:
DHCPNAK
|
| clientActionOnReceipt |
broadcast DHCPDISCOVER
ⓘ
return to INIT state ⓘ stop using current IP address ⓘ |
| contrastsWith |
DHCPACK
ⓘ
DHCPDECLINE ⓘ |
| definedIn | RFC 2131 ⓘ |
| hasDHCPMessageTypeCode | 6 ⓘ |
| hasDirection | server-to-client ⓘ |
| hasField |
chaddr
ⓘ
ciaddr ⓘ flags ⓘ giaddr ⓘ hlen ⓘ hops ⓘ htype ⓘ op ⓘ options ⓘ secs ⓘ siaddr ⓘ xid ⓘ yiaddr ⓘ |
| includesOption | DHCP Message Type option ⓘ |
| indicates |
client must stop using its current IP configuration
ⓘ
previously assigned IP configuration is invalid ⓘ requested IP address cannot be granted ⓘ requested IP configuration is invalid ⓘ |
| layer | application layer ⓘ |
| mayBeSentInResponseTo |
DHCPINFORM
ⓘ
DHCPREQUEST ⓘ |
| mayIncludeOption |
Message option
ⓘ
Server Identifier option ⓘ Vendor-specific options ⓘ |
| partOf |
Dynamic Host Configuration Protocol
ⓘ
linked to:
DHCP
|
| relatedTo | IP address lease management ⓘ |
| sentTo | DHCP client ⓘ |
| transportedOver | UDP ⓘ |
| triggers | client to restart DHCP configuration process ⓘ |
| usedBy | DHCP server ⓘ |
| usedIn | IPv4 DHCP ⓘ |
| usedWhen |
client moves to a different IP subnet
ⓘ
client uses an address not valid on the server’s network ⓘ lease for the requested address is no longer valid ⓘ server policy forbids granting the requested configuration ⓘ |
| usesClientPort | 68 ⓘ |
| usesServerPort | 67 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: DHCPNAK Description of subject: DHCPNAK is a Dynamic Host Configuration Protocol (DHCP) message type used by a server to indicate that a client's requested or previously assigned IP configuration is invalid or cannot be granted.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: DHCPNAK