LIBLWIP - ARP fix

- does not crash KVM anymore
2013-03-25 16:51:25 +01:00
parent 2d9009b0ab
commit 566af1516a
1 changed files with 5 additions and 0 deletions
@@ -1189,6 +1189,11 @@ etharp_raw(struct netif *netif, const struct eth_addr *ethsrc_addr,

  LWIP_ASSERT("netif != NULL", netif != NULL);

+  /* Do not send ARP if the source IP is not set. This may cause various
+   * problems, for instance, triggers an assert in qemu-kvm */
+  if (ipsrc_addr->addr == 0)
+	  return ERR_OK;
+
  /* allocate a pbuf for the outgoing ARP request packet */
  p = pbuf_alloc(PBUF_RAW, SIZEOF_ETHARP_PACKET, PBUF_RAM);
  /* could allocate a pbuf for an ARP request? */