From: Roy Marples <roy@marples.name>
Date: Wed, 22 Jan 2020 16:21:12 +0000 (+0000)
Subject: DHCP: Take interface reference on Address Defend failure
X-Git-Tag: v9.0.0~85
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6a4601a2b9a08a31198707c6236757d37eeabcc3;p=thirdparty%2Fdhcpcd.git

DHCP: Take interface reference on Address Defend failure

As the astate could be freed on dropping the DHCP state.
---

diff --git a/src/dhcp.c b/src/dhcp.c
index 54de9f72..0319301b 100644
--- a/src/dhcp.c
+++ b/src/dhcp.c
@@ -2389,9 +2389,10 @@ dhcp_message_new(struct bootp **bootp,
 static void
 dhcp_arp_defend_failed(struct arp_state *astate)
 {
+	struct interface *ifp = astate->iface;
 
-	dhcp_drop(astate->iface, "EXPIRED");
-	dhcp_start1(astate->iface);
+	dhcp_drop(ifp, "EXPIRED");
+	dhcp_start1(ifp);
 }
 #endif