From b4a9811c42ecb70b2f0b375f6d4c77ab34d1f598 Mon Sep 17 00:00:00 2001 From: Jonas Danielsson <the.sator@gmail.com> Date: Tue, 20 Nov 2007 17:38:16 -0800 Subject: [PATCH] [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> --- net/ipv4/arp.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c index 36d6798947b5..15ca729f7084 100644 --- a/net/ipv4/arp.c +++ b/net/ipv4/arp.c @@ -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; } -- 2.34.1