Decode DHCP netmask option correctly
Signed-off-by: Chris Dearman <chris@mips.com>
Change-Id: Ibc288458baf2f75c5b19a46e4c97ee59521cc9a5
diff --git a/libnetutils/dhcpclient.c b/libnetutils/dhcpclient.c
index b38e258..34500e7 100644
--- a/libnetutils/dhcpclient.c
+++ b/libnetutils/dhcpclient.c
@@ -197,7 +197,11 @@
}
switch(opt) {
case OPT_SUBNET_MASK:
- if (optlen >= 4) info->prefixLength = ipv4NetmaskToPrefixLength(*((uint32_t*)x));
+ if (optlen >= 4) {
+ in_addr_t mask;
+ memcpy(&mask, x, 4);
+ info->prefixLength = ipv4NetmaskToPrefixLength(mask);
+ }
break;
case OPT_GATEWAY:
if (optlen >= 4) memcpy(&info->gateway, x, 4);