Fix handling of DHCPv6 replies containing unrequested IA_NA/IA_PD options

diff --git a/src/dhcpv6.c b/src/dhcpv6.c
index 17866889e6f06f327c6c48bb81a030e7314e5106..6ae6f7a02fd8d9040fc8b676cd81a73d361d21c6 100644 (file)
--- a/src/dhcpv6.c
+++ b/src/dhcpv6.c
@@ -947,6 +947,10 @@ static int dhcpv6_handle_reply(enum dhcpv6_msg orig, _unused const int rc,
                                && olen > -4 + sizeof(struct dhcpv6_ia_hdr)) {
                        struct dhcpv6_ia_hdr *ia_hdr = (void*)(&odata[-4]);
 
+                       if ((na_mode == IA_MODE_NONE && otype == DHCPV6_OPT_IA_NA) ||
+                           (pd_mode == IA_MODE_NONE && otype == DHCPV6_OPT_IA_PD))
+                               continue;
+
                        // Test ID
                        if (ia_hdr->iaid != htonl(1) && otype == DHCPV6_OPT_IA_NA)
                                continue;