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Diffstat (limited to 'dhcp.c')
-rw-r--r--dhcp.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/dhcp.c b/dhcp.c
index 197a515..d24ef86 100644
--- a/dhcp.c
+++ b/dhcp.c
@@ -57,6 +57,8 @@ static struct opt opts[255];
#define DHCPINFORM 8
#define DHCPFORCERENEW 9
+#define OPT_MIN 60 /* RFC 951 */
+
/**
* dhcp_init() - Initialise DHCP options
*/
@@ -158,9 +160,9 @@ static int fill(struct msg *m)
m->o[offset++] = 255;
m->o[offset++] = 0;
- if (offset < 62 /* RFC 951 */) {
- memset(&m->o[offset], 0, 62 - offset);
- offset = 62;
+ if (offset < OPT_MIN) {
+ memset(&m->o[offset], 0, OPT_MIN - offset);
+ offset = OPT_MIN;
}
return offset;