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-rw-r--r--src/libsystemd-network/sd-dhcp6-client.c18
1 files changed, 12 insertions, 6 deletions
diff --git a/src/libsystemd-network/sd-dhcp6-client.c b/src/libsystemd-network/sd-dhcp6-client.c
index a432bbfc48..3db1cb09db 100644
--- a/src/libsystemd-network/sd-dhcp6-client.c
+++ b/src/libsystemd-network/sd-dhcp6-client.c
@@ -158,6 +158,13 @@ int sd_dhcp6_client_set_mac(sd_dhcp6_client *client, const uint8_t *addr,
return 0;
}
+static int client_ensure_duid(sd_dhcp6_client *client)
+{
+ if (client->duid_len != 0)
+ return 0;
+ return dhcp_identifier_set_duid_en(&client->duid, &client->duid_len);
+}
+
int sd_dhcp6_client_set_duid(sd_dhcp6_client *client, uint16_t type, uint8_t *duid,
size_t duid_len)
{
@@ -378,6 +385,7 @@ static int client_send_message(sd_dhcp6_client *client, usec_t time_now) {
if (r < 0)
return r;
+ assert (client->duid_len);
r = dhcp6_option_append(&opt, &optlen, DHCP6_OPTION_CLIENTID,
client->duid_len, &client->duid);
if (r < 0)
@@ -1108,6 +1116,10 @@ int sd_dhcp6_client_start(sd_dhcp6_client *client)
if (r < 0)
return r;
+ r = client_ensure_duid(client);
+ if (r < 0)
+ return r;
+
r = dhcp6_network_bind_udp_socket(client->index, NULL);
if (r < 0)
return r;
@@ -1205,7 +1217,6 @@ sd_dhcp6_client *sd_dhcp6_client_unref(sd_dhcp6_client *client) {
int sd_dhcp6_client_new(sd_dhcp6_client **ret)
{
_cleanup_dhcp6_client_unref_ sd_dhcp6_client *client = NULL;
- int r;
size_t t;
assert_return(ret, -EINVAL);
@@ -1222,11 +1233,6 @@ int sd_dhcp6_client_new(sd_dhcp6_client **ret)
client->fd = -1;
- /* initialize DUID */
- r = dhcp_identifier_set_duid_en(&client->duid, &client->duid_len);
- if (r < 0)
- return r;
-
client->req_opts_len = ELEMENTSOF(default_req_opts);
client->req_opts = new0(be16_t, client->req_opts_len);