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  1. LWIP based TCP/IP
  2. PSLWIP-442

[DHCP/BOOTP] IP address is still in use after physical link down/up event although DHCP/BOOTP server is not available

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: V5.1.0.0, V5.2.0.0
    • Fix Version/s: V5.1.0.10, V5.2.0.1, V5.2.1.0
    • Labels:
      None
    • Account:
      SPC TCP_IP (SPCTCPIP)

      Description

      The device is configured for DHCP/BOOTP and has been successfully assigned a valid IP address. ACD is turned OFF.

      After a physical link down/up the device starts sending DHCP-DISCOVER (or BOOT REQUEST) frames, which is correct.
      However, the IP address that was in use before the link down/up event is still in use and the device still communicates via this IP address (e.g. ICMP ping etc.), which is unexpected.

      After a link down/up event, the IP address must be dropped in case DHCP/BOOTP is active. The device is required to obtain the IP from the DHCP/BOOTP server again.

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                  • Reporter:
                    KMichel Kai Michel
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                    Dates

                    • Created:
                      Updated:
                      Resolved: