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Diffstat (limited to 'src/plugins/dhcp/dhcp6_ia_na_client_cp.c')
-rw-r--r--src/plugins/dhcp/dhcp6_ia_na_client_cp.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/src/plugins/dhcp/dhcp6_ia_na_client_cp.c b/src/plugins/dhcp/dhcp6_ia_na_client_cp.c
index 2d4135d7ebd..b87ad2139ed 100644
--- a/src/plugins/dhcp/dhcp6_ia_na_client_cp.c
+++ b/src/plugins/dhcp/dhcp6_ia_na_client_cp.c
@@ -302,7 +302,11 @@ dhcp6_reply_event_handler (vl_api_dhcp6_reply_event_t * mp)
{
address_info->preferred_lt = preferred_time;
address_info->valid_lt = valid_time;
- address_info->due_time = current_time + valid_time;
+ address_info->due_time = current_time;
+ /* Renew the lease at the preferred time, if non-zero */
+ address_info->due_time += (preferred_time > 0) ?
+ preferred_time : valid_time;
+
if (address_info->due_time > rm->max_valid_due_time)
rm->max_valid_due_time = address_info->due_time;
continue;
@@ -316,7 +320,11 @@ dhcp6_reply_event_handler (vl_api_dhcp6_reply_event_t * mp)
address_info->address = *address;
address_info->preferred_lt = preferred_time;
address_info->valid_lt = valid_time;
- address_info->due_time = current_time + valid_time;
+ address_info->due_time = current_time;
+ /* Renew the lease at the preferred time, if non-zero */
+ address_info->due_time += (preferred_time > 0) ?
+ preferred_time : valid_time;
+
if (address_info->due_time > rm->max_valid_due_time)
rm->max_valid_due_time = address_info->due_time;
rm->client_state_by_sw_if_index[sw_if_index].address_count++;