sd-dhcp-client/networkd: set lifetimes for IPv4 addresses

Note that /proc/sys/net/ipv4/ip_dynaddr needs to be non-zero.

[tomegun: hook up DHCP renew events to increase the lifetime when necessary]

2 files changed, 11 insertions, 1 deletions

diff --git a/src/libsystemd-network/sd-dhcp-client.c b/src/libsystemd-network/sd-dhcp-client.c
index 1603c41227..790728b40c 100644
--- a/src/libsystemd-network/sd-dhcp-client.c
+++ b/src/libsystemd-network/sd-dhcp-client.c
@@ -879,7 +879,8 @@ static int client_handle_ack(sd_dhcp_client *client, DHCPMessage *ack,
                     client->lease->subnet_mask != lease->subnet_mask ||
                     client->lease->router != lease->router) {
                         r = DHCP_EVENT_IP_CHANGE;
-                }
+                } else
+                        r = DHCP_EVENT_RENEW;
 
                 client->lease = sd_dhcp_lease_unref(client->lease);
         }
diff --git a/src/libsystemd-network/sd-dhcp-lease.c b/src/libsystemd-network/sd-dhcp-lease.c
index 3203b7a592..94ba283cf0 100644
--- a/src/libsystemd-network/sd-dhcp-lease.c
+++ b/src/libsystemd-network/sd-dhcp-lease.c
@@ -47,6 +47,15 @@ int sd_dhcp_lease_get_address(sd_dhcp_lease *lease, struct in_addr *addr) {
         return 0;
 }
 
+int sd_dhcp_lease_get_lifetime(sd_dhcp_lease *lease, uint32_t *lifetime) {
+        assert_return(lease, -EINVAL);
+        assert_return(lease, -EINVAL);
+
+        *lifetime = lease->lifetime;
+
+        return 0;
+}
+
 int sd_dhcp_lease_get_mtu(sd_dhcp_lease *lease, uint16_t *mtu) {
         assert_return(lease, -EINVAL);
         assert_return(mtu, -EINVAL);