commit 81a32e9b06cc6685866061b88645135c44d651d4
author Roberto Barbieri Carrera <r.barbiericarrera@archwave.net> Wed Nov 16 12:24:57 2016 +0100
committer goldsimon <goldsimon@gmx.de> Wed Nov 16 12:24:57 2016 +0100
tree db888be9747ddd6e1c08580b3b23a22cc3377c0e
parent 6dc3a2108ad040ba225c0c46e5c4e0f41455e6d2

Fixed bug #49610: Sometimes, autoIP fails to reuse the same address

Signed-off-by: goldsimon <goldsimon@gmx.de>

src/core/ipv4/autoip.c

diff --git a/src/core/ipv4/autoip.c b/src/core/ipv4/autoip.c
index 86a4aed..9aa3283 100644
--- a/src/core/ipv4/autoip.c
+++ b/src/core/ipv4/autoip.c
@@ -482,7 +482,8 @@
       * ip.dst == llipaddr && hw.src != own hwaddr
       */
       if ((ip4_addr_cmp(&sipaddr, &autoip->llipaddr)) ||
-          (ip4_addr_cmp(&dipaddr, &autoip->llipaddr) &&
+          (ip4_addr_isany_val(sipaddr) &&
+           ip4_addr_cmp(&dipaddr, &autoip->llipaddr) &&
            !eth_addr_cmp(&netifaddr, &hdr->shwaddr))) {
         LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE | LWIP_DBG_LEVEL_WARNING,
           ("autoip_arp_reply(): Probe Conflict detected\n"));