[dhcp] Ignore DHCPACKs containing incorrect IP addresses

Signed-off-by: Michael Brown <mcb30@ipxe.org>

diff --git a/src/net/udp/dhcp.c b/src/net/udp/dhcp.c
index 0483e2f609a849cfc3828cbcf5cd9e97556fbb1a..6435bf2eecbc7d1b1e58da5d179c6b178cad1d52 100644 (file)
--- a/src/net/udp/dhcp.c
+++ b/src/net/udp/dhcp.c
@@ -528,6 +528,8 @@ static void dhcp_request_rx ( struct dhcp_session *dhcp,
                return;
        if ( server_id.s_addr != dhcp->server.s_addr )
                return;
+       if ( ip.s_addr != dhcp->offer.s_addr )
+               return;
 
        /* Record assigned address */
        dhcp->local.sin_addr = ip;