DHCPv6
Last updated
Last updated
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A comparative view of DHCPv6 and DHCPv4 message types is presented in the table below:
| DHCPv6 Message Type | DHCPv4 Message Type |
|---|---|
Detailed Explanation of DHCPv6 Message Types:
Solicit (1): Initiated by a DHCPv6 client to find available servers.
Advertise (2): Sent by servers in response to a Solicit, indicating availability for DHCP service.
Request (3): Clients use this to request IP addresses or prefixes from a specific server.
Confirm (4): Used by a client to verify if the assigned addresses are still valid on the network, typically after a network change.
Renew (5): Clients send this to the original server to extend address lifetimes or update configurations.
Rebind (6): Sent to any server to extend address lifetimes or update configurations, especially when no response is received to a Renew.
Reply (7): Servers use this to provide addresses, configuration parameters, or to acknowledge messages like Release or Decline.
Release (8): Clients inform the server to stop using one or more assigned addresses.
Decline (9): Sent by clients to report that assigned addresses are in conflict on the network.
Reconfigure (10): Servers prompt clients to initiate transactions for new or updated configurations.
Information-Request (11): Clients request configuration parameters without IP address assignment.
Relay-Forw (12): Relay agents forward messages to servers.
Relay-Repl (13): Servers reply to relay agents, who then deliver the message to the client.
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Solicit (1)
DHCPDISCOVER
Advertise (2)
DHCPOFFER
Request (3), Renew (5), Rebind (6)
DHCPREQUEST
Reply (7)
DHCPACK / DHCPNAK
Release (8)
DHCPRELEASE
Information-Request (11)
DHCPINFORM
Decline (9)
DHCPDECLINE
Confirm (4)
none
Reconfigure (10)
DHCPFORCERENEW
Relay-Forw (12), Relay-Reply (13)
none