Probe before claiming an IPv4 address
05Later conflict-detection rules add deliberate probes and announcements using ARP.
Terms in this drawing
Related RFCs and changes
“Updates” changes part of an earlier RFC. “Obsoletes” replaces it. This list shows selected related documents.
DIAGRAMRelated Issues ↗
RFC 826 · Related IssuesEXAMPLE
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03
An observed conflict stops the claim; no conflict allows the later announcement process.
An observed conflict stops the claim; no conflict allows the later announcement process.
Protocol participantThreat or exceptionProtocol controlSimplified drawings · precise section references
RFC 826 · address resolutionRFC 5227 § 2.1
RFC 5227 specifies address-conflict probes and announcements; these are later procedures, not ordinary RFC 826 resolution requests.
Read the updated RFC section ↗RFC 5227 defines a probe with sender IPv4 address zero and target equal to the candidate address.
- RFC 5227 defines a probe with sender IPv4 address zero and target equal to the candidate address.
- A conflicting response prevents silently proceeding with the candidate; announcement serves a different purpose.
The drawing is a simplified worked example. Follow the linked RFC and its updates for implementation requirements.
Read the RFC section ↗Diagrams simplify the RFC. Read the linked sections for complete requirements.
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