Merge pull request #16104 from ssahani/dhcpv6-iaid

networkctl: Display DHCPv6 IAID

src/libsystemd-network/sd-dhcp6-client.c

@@ -342,6 +342,18 @@ int sd_dhcp6_client_set_iaid(sd_dhcp6_client *client, uint32_t iaid) {
         return 0;
 }
 
+int sd_dhcp6_client_get_iaid(sd_dhcp6_client *client, uint32_t *iaid) {
+        assert_return(client, -EINVAL);
+        assert_return(iaid, -EINVAL);
+
+        if (!client->iaid_set)
+                return -ENODATA;
+
+        *iaid = be32toh(client->ia_na.ia_na.id);
+
+        return 0;
+}
+
 int sd_dhcp6_client_set_fqdn(
                 sd_dhcp6_client *client,
                 const char *fqdn) {

src/libsystemd/sd-network/sd-network.c

@@ -172,6 +172,10 @@ _public_ int sd_network_link_get_dhcp4_client_id_string(int ifindex, char **clie
         return network_link_get_string(ifindex, "DHCP4_CLIENT_ID", client_id);
 }
 
+_public_ int sd_network_link_get_dhcp6_client_iaid_string(int ifindex, char **iaid) {
+        return network_link_get_string(ifindex, "DHCP6_CLIENT_IAID", iaid);
+}
+
 _public_ int sd_network_link_get_required_for_online(int ifindex) {
         _cleanup_free_ char *s = NULL;
         int r;

src/network/networkctl.c

@@ -1381,7 +1381,7 @@ static int link_status_one(
         _cleanup_strv_free_ char **dns = NULL, **ntp = NULL, **sip = NULL, **search_domains = NULL, **route_domains = NULL,
                 **pop3_server = NULL, **smtp_server = NULL, **lpr_server = NULL;
         _cleanup_free_ char *setup_state = NULL, *operational_state = NULL, *tz = NULL;
-        _cleanup_free_ char *t = NULL, *network = NULL, *client_id = NULL;
+        _cleanup_free_ char *t = NULL, *network = NULL, *client_id = NULL, *iaid = NULL;
         const char *driver = NULL, *path = NULL, *vendor = NULL, *model = NULL, *link = NULL;
         const char *on_color_operational, *off_color_operational,
                 *on_color_setup, *off_color_setup;
@@ -2083,6 +2083,16 @@ static int link_status_one(
                         return table_log_add_error(r);
         }
 
+        r = sd_network_link_get_dhcp6_client_iaid_string(info->ifindex, &iaid);
+        if (r >= 0) {
+                r = table_add_many(table,
+                                   TABLE_EMPTY,
+                                   TABLE_STRING, "DHCP6 Client IAID:",
+                                   TABLE_STRING, iaid);
+                if (r < 0)
+                        return table_log_add_error(r);
+        }
+
         r = dump_lldp_neighbors(table, "Connected To:", info->ifindex);
         if (r < 0)
                 return r;

src/network/networkd-link.c

@@ -4086,8 +4086,9 @@ int link_save(Link *link) {
         const char *admin_state, *oper_state, *carrier_state, *address_state;
         _cleanup_free_ char *temp_path = NULL;
         _cleanup_fclose_ FILE *f = NULL;
-        Address *a;
+        uint32_t iaid;
         Route *route;
+        Address *a;
         Iterator i;
         int r;
 
@@ -4420,6 +4421,10 @@ int link_save(Link *link) {
                 }
         }
 
+        r = sd_dhcp6_client_get_iaid(link->dhcp6_client, &iaid);
+        if (r >= 0)
+                fprintf(f, "DHCP6_CLIENT_IAID=0x%x\n", iaid);
+
         r = fflush_and_check(f);
         if (r < 0)
                 goto fail;

src/systemd/sd-dhcp6-client.h

@@ -110,6 +110,9 @@ int sd_dhcp6_client_set_duid_llt(
 int sd_dhcp6_client_set_iaid(
                 sd_dhcp6_client *client,
                 uint32_t iaid);
+int sd_dhcp6_client_get_iaid(
+                sd_dhcp6_client *client,
+                uint32_t *iaid);
 int sd_dhcp6_client_set_fqdn(
                 sd_dhcp6_client *client,
                 const char *fqdn);

src/systemd/sd-network.h

@@ -191,6 +191,9 @@ int sd_network_link_get_timezone(int ifindex, char **timezone);
 /* Get DHCPv4 client id for a given link. */
 int sd_network_link_get_dhcp4_client_id_string(int ifindex, char **client_id);
 
+/* Get DHCPv6 client IAID for a given link. */
+int sd_network_link_get_dhcp6_client_iaid_string(int ifindex, char **iaid);
+
 /* Monitor object */
 typedef struct sd_network_monitor sd_network_monitor;