dhcpv6: DHCPV6_OPT_INFO_REFRESH contains a 4 byte option

we shall not expect data beyond 4 bytes. So the logic should be ==

Signed-off-by: Paul Donald <[email protected]>
Link: https://github.com/openwrt/odhcp6c/pull/118
Signed-off-by: Álvaro Fernández Rojas <[email protected]>

diff --git a/src/dhcpv6.c b/src/dhcpv6.c
index e5ef5ccab4132ea3658459541686c301cb5d1397..7bcaee06e56dda80c4cedbf421d12740b41dcb48 100644 (file)
--- a/src/dhcpv6.c
+++ b/src/dhcpv6.c
@@ -1475,7 +1475,7 @@ static int dhcpv6_handle_reply(enum dhcpv6_msg orig, _o_unused const int rc,
                                break;
 
                        case DHCPV6_OPT_INFO_REFRESH:
-                               if (olen >= 4)
+                               if (olen == 4)
                                        refresh = ntohl_unaligned(odata);
                                break;