2.17. DHCPSERVER

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2.17. DHCPSERVER

These log messages refer to the DHCPSERVER (DHCP server events) category.

2.17.1. unable_to_send_response (ID: 00900001)

Default Severity: WARNING
Log Message: Failed to get buffer for sending. Unable to reply
Explanation: Unable to get a buffer for sending.
Firewall Action: None
Recommended Action: Check buffer consumption.
Revision: 1

2.17.2. option_section_is_too_big_unable_to_reply (ID: 00900002)

Default Severity: WARNING
Log Message: The option section is too big, unable to reply. Dropping
Explanation: Unable to send reply since the DHCP option section is too big.
Firewall Action: drop
Recommended Action: Reduce the number of used DHCP options.
Revision: 1

2.17.3. unable_to_save_lease_db (ID: 00900003)

Default Severity: WARNING
Log Message: Unable to auto save the lease database to disk
Explanation: Some sort of error occurred saving the lease database to disk.
Firewall Action: None
Recommended Action: Make sure that there is sufficient diskspace available.
Revision: 1

2.17.4. lease_db_successfully_saved (ID: 00900004)

Default Severity: NOTICE
Log Message: Lease database was successfully auto saved to disk
Explanation: The lease database was successfully saved to disk.
Firewall Action: None
Recommended Action: None
Revision: 1

2.17.5. dhcp_packet_too_small (ID: 00900005)

Default Severity: WARNING
Log Message: Received DHCP packet which is smaller than the minimum allowed 300 bytes. Dropping
Explanation: Received a DHCP packet which is smaller than the minimum allowed 300 bytes.
Firewall Action: drop
Recommended Action: Investigate what client implementation is being used.
Revision: 2
Context Parameters: Packet Buffer

2.17.6. request_for_ip_from_non_bound_client_without_state (ID: 00900006)

Default Severity: WARNING
Log Message: Received a request from client(not in bound) <client> for IP <client_ip> without state. Rejecting
Explanation: Received a request from a non bound client without state.
Firewall Action: reject
Recommended Action: None
Revision: 1
Parameters: client
client_ip
Context Parameters: Packet Buffer

2.17.7. request_for_ip_from_bound_client_without_state (ID: 00900007)

Default Severity: WARNING
Log Message: Received a request from client(in bound) <client> for IP <client_ip> without state. Rejecting
Explanation: Received a request from a bound client without state.
Firewall Action: reject
Recommended Action: None
Revision: 1
Parameters: client
client_ip
Context Parameters: Packet Buffer

2.17.8. request_for_ip_from_non_bound_client_without_state (ID: 00900008)

Default Severity: WARNING
Log Message: Received a request from client(not in bound) <client> for IP <client_ip> without state. Ignoring
Explanation: Received a request from an unbound client without state.
Firewall Action: None
Recommended Action: None
Revision: 1
Parameters: client
client_ip
Context Parameters: Packet Buffer

2.17.9. all_ip_pools_depleted (ID: 00900010)

Default Severity: WARNING
Log Message: All IP pools are depleted. Unable to handle request. Ignoring
Explanation: All IP pools have been depleted.
Firewall Action: None
Recommended Action: Extend the pools to support more clients.
Revision: 1
Context Parameters: Packet Buffer

2.17.10. request_with_bad_udp_checksum (ID: 00900011)

Default Severity: WARNING
Log Message: Received request with bad UDP checksum. Dropping
Explanation: Received request with bad UDP checksum.
Firewall Action: drop
Recommended Action: Check network equipment for errors.
Revision: 1
Context Parameters: Packet Buffer

2.17.11. lease_timeout (ID: 00900012)

Default Severity: NOTICE
Log Message: Lease for IP <client_ip> timed out. Was bound to client <client_hw>
Explanation: A client lease wasn't renewed and timed out.
Firewall Action: lease_inactive
Recommended Action: None
Revision: 1
Parameters: client_ip
client_hw
Context Parameters: Rule Name

2.17.12. lease_timeout (ID: 00900013)

Default Severity: NOTICE
Log Message: Offer for IP <client_ip> timed out. Was offered to client <client_hw>
Explanation: An offer to a client was never accepted and timed out.
Firewall Action: lease_inactive
Recommended Action: None
Revision: 1
Parameters: client_ip
client_hw
Context Parameters: Rule Name

2.17.13. pool_depleted (ID: 00900014)

Default Severity: WARNING
Log Message: All IPs in the pool are in use. Request cannot be fulfilled
Explanation: A request cannot be fullfilled since all pools are in use.
Firewall Action: None
Recommended Action: Extend the pools to support more clients.
Revision: 1
Context Parameters: Rule Name

2.17.14. sending_offer (ID: 00900015)

Default Severity: NOTICE
Log Message: Received DISCOVER from client <client_hw>. Sending IP offer <offer_ip>
Explanation: Received discover (initial IP query) from a client.
Firewall Action: None
Recommended Action: None
Revision: 2
Parameters: client_hw
offer_ip
client_hostname
client_vendorclass
client_params
Context Parameters: Rule Name
Packet Buffer

2.17.15. pool_depleted (ID: 00900016)

Default Severity: NOTICE
Log Message: All IPs in the pool are now in use
Explanation: All IPs in the pool have been consumed.
Firewall Action: None
Recommended Action: Extend the pool to support more clients.
Revision: 1
Context Parameters: Rule Name
Packet Buffer

2.17.16. request_for_non_offered_ip (ID: 00900017)

Default Severity: WARNING
Log Message: Client <client_hw> requested non offered IP. Rejecting
Explanation: Client sent a request for a non offered IP.
Firewall Action: nak
Recommended Action: None
Revision: 1
Parameters: client_hw
client_wanted
client_offered
Context Parameters: Rule Name
Packet Buffer

2.17.17. request_for_non_bound_ip (ID: 00900018)

Default Severity: WARNING
Log Message: Client <client_hw> requested non bound IP. Rejecting
Explanation: Client requested a non bound IP.
Firewall Action: reject
Recommended Action: None
Revision: 1
Parameters: client_hw
client_wanted
bound
Context Parameters: Rule Name
Packet Buffer

2.17.18. client_bound (ID: 00900019)

Default Severity: NOTICE
Log Message: Client <client_hw> accepted IP <client_ip>. Client is now bound
Explanation: Client accepted the IP address and are now bound.
Firewall Action: new_lease
Recommended Action: None
Revision: 3
Parameters: client_hw
client_ip
client_hostname
client_vendorclass
client_params
Context Parameters: Rule Name
Packet Buffer

2.17.19. client_renewed (ID: 00900020)

Default Severity: NOTICE
Log Message: Client <client_hw> renewed IP <client_ip>
Explanation: Client successfully renewed its lease.
Firewall Action: renew
Recommended Action: None
Revision: 3
Parameters: client_hw
client_ip
client_hostname
client_vendorclass
client_params
Context Parameters: Rule Name
Packet Buffer

2.17.20. got_inform_request (ID: 00900021)

Default Severity: NOTICE
Log Message: Got INFORM request from client <client_hw>. Acknowledging
Explanation: Got an inform (client already got an IP and asks for configuration parameters) request from a client.
Firewall Action: acknowledging
Recommended Action: None
Revision: 2
Parameters: client_hw
client_ip
client_hostname
client_vendorclass
client_params
Context Parameters: Rule Name
Packet Buffer

2.17.21. decline_for_ip_on_wrong_iface (ID: 00900022)

Default Severity: NOTICE
Log Message: Got decline for ip <client_ip> on wrong interface (recv: <recv_if>, lease: <client_if>). Decline is ignored
Explanation: Got decline from a client on the wrong interface.
Firewall Action: None
Recommended Action: Check network for inconsistent routes.
Revision: 1
Parameters: client_hw
client_ip
recv_if
client_if
Context Parameters: Rule Name
Packet Buffer

2.17.22. decline_for_non_offered_ip (ID: 00900023)

Default Severity: NOTICE
Log Message: Client <client_hw> declined non offered IP. Decline is ignored
Explanation: Client rejected non a offered IP.
Firewall Action: None
Recommended Action: None
Revision: 1
Parameters: client_hw
Context Parameters: Rule Name
Packet Buffer

2.17.23. declined_by_client (ID: 00900024)

Default Severity: WARNING
Log Message: Client <client_hw> declined IP <client_ip>. IP blacklisted
Explanation: A client declined (indicated that the IP is already in use someone else) offered IP.
Firewall Action: blacklist
Recommended Action: Check network for statically configured hosts or incorrectly proxy ARPed routes.
Revision: 1
Parameters: client_hw
client_ip
Context Parameters: Rule Name
Packet Buffer

2.17.24. request_for_ip_from_bound_client_without_state (ID: 00900025)

Default Severity: WARNING
Log Message: Received a request from client(bound) <client> for IP <client_ip> without state. Ignoring
Explanation: Received a request from a bound client without state.
Firewall Action: None
Recommended Action: None
Revision: 1
Parameters: client
client_ip
Context Parameters: Packet Buffer

2.17.25. release_for_ip_on_wrong_iface (ID: 00900026)

Default Severity: WARNING
Log Message: Got release for ip <client_ip> on wrong interface (recv: <recv_if>, lease: <client_if>). Decline is ignored
Explanation: Got release from a client on the wrong interface.
Firewall Action: None
Recommended Action: Check network for inconsistent routes.
Revision: 1
Parameters: client_hw
client_ip
recv_if
client_if
Context Parameters: Rule Name
Packet Buffer

2.17.26. released_by_client (ID: 00900027)

Default Severity: NOTICE
Log Message: Client <client_hw> released IP <client_ip>.
Explanation: A client released (prematuraly ended) its lease.
Firewall Action: lease_released
Recommended Action: None
Revision: 1
Parameters: client_hw
client_ip
Context Parameters: Rule Name
Packet Buffer

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