Messages in this thread Patch in this message | | | Date | Thu, 15 Nov 2007 12:40:22 +0100 | From | "Jonas Danielsson" <> | Subject | [PATCH] net/ipv4/arp.c: Fix arp reply when sender ip 0 (was: Strange behavior in arp probe reply, bug or feature?) |
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Fix arp reply when received arp probe with sender ip 0.
Can't find any ground in RFC2131 to send a non-valid arp-reply in the special case of sender ip being set to 0.
- Bug fix for arp handling when sender ip is set to 0. Send a correct arp reply instead of one with sender ip and sender hardware adress in target fields.
Now sends target ip and target hw as received in arp probe.
Signed-off-by: Jonas Danielsson <the.sator@gmail.com>
--- arp.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
Index: arp.c =================================================================== RCS file: /usr/local/cvs/linux/os/linux-2.6/net/ipv4/arp.c,v retrieving revision 1.22 diff -u -w -r1.22 arp.c --- arp.c 13 Oct 2006 12:45:47 -0000 1.22 +++ arp.c 15 Nov 2007 10:34:44 -0000 @@ -827,7 +827,8 @@ if (arp->ar_op == htons(ARPOP_REQUEST) && inet_addr_type(tip) == RTN_LOCAL && !arp_ignore(in_dev,dev,sip,tip)) - arp_send(ARPOP_REPLY,ETH_P_ARP,tip,dev,tip,sha,dev->dev_addr,dev->dev_addr); + arp_send(ARPOP_REPLY, ETH_P_ARP, sip, dev, tip, sha, + dev->dev_addr, sha); goto out; } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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