lwIP - A Lightweight TCP/IP stack - Bugs: bug #26507, Gratuitous ARP depends on...
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bug #26507: Gratuitous ARP depends on arp_table / uses etharp_query
Submitter: | Simon Goldschmidt <goldsimon> | ||
Submitted: | Fri 08 May 2009 08:09:41 PM UTC | ||
Category: | ARP | Severity: | 3 - Normal |
Item Group: | Faulty Behaviour | Status: | Fixed |
Privacy: | Public | Assigned to: | goldsimon |
Open/Closed: | Closed | Planned Release: | None |
lwIP version: | CVS Head |
Tue 12 May 2009 08:14:40 PM UTC, comment #1: |
Simon Goldschmidt <goldsimon> |
Fri 08 May 2009 08:09:41 PM UTC, original submission:
We should provide an own function for sending gratuitous ARPs. |
Simon Goldschmidt <goldsimon> |
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Depends on the following items: None found
Items that depend on this one: None found
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Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2009-05-12 | goldsimon | Status | None | Fixed | |
Assigned to | None | goldsimon | |||
Open/Closed | Open | Closed |
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Corresponding source code
"HM2" wrote on lwip-source:
However, RFC 3220 says in chapter 4.6
When using an ARP Reply packet,
the Target Hardware Address is also set to the link-layer
address to which this cache entry should be updated (this field
is not used in an ARP Request packet).
So it is OK to use ethzero.
I've added a function-like define etharp_gratuitous(), that is used instead of etharp_query in netif.c. It just sends a gratuitous request by calling etharp_request(netif, netif->ip_addr).