Commit b4a9811c authored Nov 20, 2007 by Jonas Danielsson Committed by David S. Miller Nov 20, 2007

[ARP]: Fix arp reply when sender ip 0



Fix arp reply when received arp probe with sender ip 0.

Send arp reply with target ip address 0.0.0.0 and target hardware
address set to hardware address of requester. Previously sent reply
with target ip address and target hardware address set to same as
source fields.

Signed-off-by: Jonas Danielsson <the.sator@gmail.com>
Acked-by: Alexey Kuznetov <kuznet@ms2.inr.ac.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 77adefdc

net/ipv4/arp.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -828,7 +828,8 @@ static int arp_process(struct sk_buff *skb)
		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;
		}

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