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[lwip-devel] [bug #31720] ARP-queueing: RFC 1122 recommends to queue at

From: Simon Goldschmidt
Subject: [lwip-devel] [bug #31720] ARP-queueing: RFC 1122 recommends to queue at least 1 packet
Date: Sun, 21 Nov 2010 12:39:58 +0000
User-agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; de; rv: Gecko/20101026 Firefox/3.6.12


                 Summary: ARP-queueing: RFC 1122 recommends to queue at least
1 packet
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: goldsimon
            Submitted on: So 21 Nov 2010 12:39:58 GMT
                Category: ARP
                Severity: 3 - Normal
              Item Group: Faulty Behaviour
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: 
            lwIP version: CVS Head



See RFC 1122 chapter ARP Packet Queue:
"The link layer SHOULD save (rather than discard) at least
one (the latest) packet of each set of packets destined to
the same unresolved IP address, and transmit the saved
packet when the address has been resolved."

It might even be a good idea to drop our multiple-packet-queue and have a
single-packet-queue instead, which would be enabled by default. The problem of
lost packets also came up multiple times on lwip-users already.


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