More compatibility with non RFC-compliant servers

Signed-off-by: Steven Barth <steven@midlink.org>

diff --git a/src/dhcpv6.c b/src/dhcpv6.c
index cb2aa76f7c7ba01de307ca59f991ad2b9baf0bfc..597d239b5daa3451d4d00b3ce57407b779a21afd 100644 (file)
--- a/src/dhcpv6.c
+++ b/src/dhcpv6.c
@@ -328,6 +328,11 @@ static void dhcpv6_send(enum dhcpv6_msg type, uint8_t trid[3], uint32_t ecs)
                                        .addr = e[j].target
                                };
 
+                               if (type == DHCPV6_MSG_REQUEST) {
+                                       p.preferred = htonl(e[j].preferred);
+                                       p.valid = htonl(e[j].valid);
+                               }
+
                                memcpy(ia_pd + ia_pd_len, &p, sizeof(p));
                                ia_pd_len += sizeof(p);
 
@@ -372,8 +377,14 @@ static void dhcpv6_send(enum dhcpv6_msg type, uint8_t trid[3], uint32_t ecs)
                pa[i].type = htons(DHCPV6_OPT_IA_ADDR);
                pa[i].len = htons(sizeof(pa[i]) - 4U);
                pa[i].addr = e[i].target;
-               pa[i].preferred = 0;
-               pa[i].valid = 0;
+
+               if (type == DHCPV6_MSG_REQUEST) {
+                       pa[i].preferred = htonl(e[i].preferred);
+                       pa[i].valid = htonl(e[i].valid);
+               } else {
+                       pa[i].preferred = 0;
+                       pa[i].valid = 0;
+               }
        }
 
        ia_na = pa;