[Kea-users] DHCP Release message and DHCP4_PACKET_DROP_0003

S. M. Hossein Hamidi hossein.hamidi at gmail.com
Tue May 9 14:42:40 UTC 2017


Hi,

I have a kea installation with a relay agent ahead. Normal DHCP operations
except DHCP Release works well. When, I send a DHCP Release message I
encounter following error message:

"DHCP4_PACKET_DROP_0003 [hwtype=1 00:00:00:11:11:11], cid=[no info],
tid=0x3602fcf, from interface ens39: it contains a foreign server
identifier"

Below is the packet content I captured using Wireshark. By the way, the
server IP Address is 192.168.234.100 and Relay Agent IP address is
192.168.0.5

-------------------------------
Frame 522: 294 bytes on wire (2352 bits), 294 bytes captured (2352 bits) on
interface 0
Linux cooked capture
Internet Protocol Version 4, Src: 192.168.234.1, Dst: 192.168.234.100
User Datagram Protocol, Src Port: 67 (67), Dst Port: 67 (67)
Bootstrap Protocol (Release)
    Message type: Boot Request (1)
    Hardware type: Ethernet (0x01)
    Hardware address length: 6
    Hops: 1
    Transaction ID: 0x03602fcf
    Seconds elapsed: 0
    Bootp flags: 0x0000 (Unicast)
    Client IP address: 255.255.255.255
    Your (client) IP address: 0.0.0.0
    Next server IP address: 192.168.234.100
    Relay agent IP address: 192.168.0.5
    Client MAC address: 00:00:00_11:11:11 (00:00:00:11:11:11)
    Client hardware address padding: 00000000000000000000
    Server host name not given
    Boot file name not given
    Magic cookie: DHCP
    Option: (53) DHCP Message Type (Release)
        Length: 1
        DHCP: Release (7)
    Option: (54) DHCP Server Identifier
        Length: 4
        DHCP Server Identifier: 255.255.255.255
    Option: (255) End
        Option End: 255
----------------------------------

Any idea what could be the cause of this problem?

Regards,
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