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List:       busybox-cvs
Subject:    [Bug 15757] New: udhcpc: unicast renew fails sporadically
From:       bugzilla () busybox ! net
Date:       2023-09-06 9:04:31
Message-ID: bug-15757-161 () https ! bugs ! busybox ! net/
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https://bugs.busybox.net/show_bug.cgi?id=15757

            Bug ID: 15757
           Summary: udhcpc: unicast renew fails sporadically
           Product: Busybox
           Version: 1.34.x
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: Networking
          Assignee: unassigned@busybox.net
          Reporter: json.wago@gmail.com
                CC: busybox-cvs@busybox.net
  Target Milestone: ---

Created attachment 9631
  --> https://bugs.busybox.net/attachment.cgi?id=9631&action=edit
config

When using busybox udhcpc in combination with OpenDHCP server, its sometimes
observed that udhcpc fails to handle/recognize the ACK for the unicast REQUEST
(renew).
The following broadcast renew is handled successfully. This behavior is not
observed when using a different dhcp-server like dnsmasq or isc-dhcp-server.

The unhandled dhcp ACK is seen on the interface that udhpc is listening on (via
tcpdump).

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