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  1. LWIP based TCP/IP
  2. PSLWIP-430

[DHCP Client] - Do not clear netif IP when DHCP/BOOTP client is disabled

          Details

          • Type: Bug
          • Status: Closed
          • Priority: Minor
          • Resolution: Fixed
          • Affects Version/s: None
          • Fix Version/s: V5.1.0.7, V5.1.3.0
          • Labels:
            None
          • Account:
            SPC TCP_IP (SPCTCPIP)

            Description

            When a device has acquired a IP from DHCP and is subsequently reconfigured for a static IP, and that static IP equals the previous DHCP-assigned IP, then TCP connections shall not be aborted, but persist the state transition "DHCP server disable".

            To achieve this, a new service LwIP_NetIf_AutoIP_Stop_KeepIpConfig() shall behave similar to LwIP_NetIf_AutoIP_Stop(), without setting the netif IP address to zero. Instead, the netif shall keep its previous state/IP, so that only the DHCP client state machine is stopped/disabled.

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                Issue Links

                discovered by

                Change - PSEIP-422 Issue with RS-Linx: Change IP Address of EtherNet/IP Device from DHCP to STATIC

                • Minor - Minor loss of function, or other problem where easy workaround is present.
                • Closed
                relates to

                Change - PSEISV5-302 Update to lwIP V5.1.0.7

                • Minor - Minor loss of function, or other problem where easy workaround is present.
                • Closed

                Bug - A problem which impairs or prevents the functions of the product. PSEISV3-701 Update lwip to V5.1.0.7

                • Minor - Minor loss of function, or other problem where easy workaround is present.
                • Closed

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                        People

                        • Reporter:
                          MBommert Marc Bommert
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                          Dates

                          • Created:
                            Updated:
                            Resolved: