[lwip-devel] [bug #57706] dhcp/acd integration: acd is not stopped

[Simon Goldschmidt]

URL:
  <https://savannah.nongnu.org/bugs/?57706>

                 Summary: dhcp/acd integration: acd is not stopped
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: goldsimon
            Submitted on: Fri 31 Jan 2020 11:30:20 AM UTC
                Category: DHCP
                Severity: 3 - Normal
              Item Group: Faulty Behaviour
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
            lwIP version: git head

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Details:

acd_stop() is completely missing in dhcp.c.

- if dhcp_stop() is called during ACD probing, the dhcp_conflict_callback()
binds the netif to 0.0.0.0

- if dhcp_conflict_callback() is called again later because of ongoing defend,
strange things might happen

--> at least acd_stop() must be called from dhcp_release_and_stop() (see
attached patch which does not cleanly apply)



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File Attachments:


-------------------------------------------------------
Date: Fri 31 Jan 2020 11:30:20 AM UTC  Name: dhcp_stop_acd.patch  Size: 904B  
By: goldsimon

<http://savannah.nongnu.org/bugs/download.php?file_id=48311>

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