From: Michael Brown <mcb30@etherboot.org>
Date: Tue, 3 Feb 2009 02:44:15 +0000 (+0000)
Subject: [pxe] Fall back to broadcast if no boot server multicast address exists
X-Git-Tag: v0.9.7~55
X-Git-Url: http://git.etherboot.org/people/lynusvaz/gpxe.git/commitdiff_plain/4b276b8df9de6909c3f3ac7034d6a97454d466d5

[pxe] Fall back to broadcast if no boot server multicast address exists

fetch_ipv4_setting() will zero its IPv4 address argument if no such
setting exists, rather than leaving it untouched.
---

diff --git a/src/usr/pxemenu.c b/src/usr/pxemenu.c
index 3f5bfc88..ae971088 100644
--- a/src/usr/pxemenu.c
+++ b/src/usr/pxemenu.c
@@ -95,8 +95,9 @@ static int pxe_menu_parse ( struct pxe_menu **menu ) {
 
 	/* Fetch relevant settings */
 	tmp_setting.tag = DHCP_PXE_BOOT_SERVER_MCAST;
-	server.s_addr = INADDR_BROADCAST;
 	fetch_ipv4_setting ( NULL, &tmp_setting, &server );
+	if ( ! server.s_addr )
+		server.s_addr = INADDR_BROADCAST;
 	tmp_setting.tag = DHCP_PXE_BOOT_MENU_PROMPT;
 	fetch_setting ( NULL, &tmp_setting, &prompt, sizeof ( prompt ) );
 	tmp_setting.tag = DHCP_PXE_BOOT_MENU;