diff --git a/man/networkctl.xml b/man/networkctl.xml
index 52876f3776..4906f7a330 100644
--- a/man/networkctl.xml
+++ b/man/networkctl.xml
@@ -267,6 +267,14 @@ s - Service VLAN, m - Two-port MAC Relay (TPMR)
Takes interface name or index number.
+
+
+ forcerenew
+
+ Send a FORCERENEW message to all connected clients, triggering DHCP reconfiguration.
+ Takes interface name or index number.
+
+
reconfigure
diff --git a/src/network/networkctl.c b/src/network/networkctl.c
index a9390b8689..880917a844 100644
--- a/src/network/networkctl.c
+++ b/src/network/networkctl.c
@@ -1943,6 +1943,48 @@ static int link_renew(int argc, char *argv[], void *userdata) {
return k;
}
+static int link_force_renew_one(sd_bus *bus, int index, const char *name) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ int r;
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.network1",
+ "/org/freedesktop/network1",
+ "org.freedesktop.network1.Manager",
+ "ForceRenewLink",
+ &error,
+ NULL,
+ "i", index);
+ if (r < 0)
+ return log_error_errno(r, "Failed to force renew dynamic configuration of interface %s: %s",
+ name, bus_error_message(&error, r));
+
+ return 0;
+}
+
+static int link_force_renew(int argc, char *argv[], void *userdata) {
+ _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+ _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
+ int index, i, k = 0, r;
+
+ r = sd_bus_open_system(&bus);
+ if (r < 0)
+ return log_error_errno(r, "Failed to connect system bus: %m");
+
+ for (i = 1; i < argc; i++) {
+ index = resolve_interface_or_warn(&rtnl, argv[i]);
+ if (index < 0)
+ return index;
+
+ r = link_force_renew_one(bus, index, argv[i]);
+ if (r < 0 && k >= 0)
+ k = r;
+ }
+
+ return k;
+}
+
static int verb_reload(int argc, char *argv[], void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
@@ -2029,6 +2071,7 @@ static int help(void) {
" label Show current address label entries in the kernel\n"
" delete DEVICES... Delete virtual netdevs\n"
" renew DEVICES... Renew dynamic configurations\n"
+ " forcerenew DEVICES... Trigger DHCP reconfiguration of all connected clients\n"
" reconfigure DEVICES... Reconfigure interfaces\n"
" reload Reload .network and .netdev files\n"
"\nOptions:\n"
@@ -2130,6 +2173,7 @@ static int networkctl_main(int argc, char *argv[]) {
{ "label", VERB_ANY, VERB_ANY, 0, list_address_labels },
{ "delete", 2, VERB_ANY, 0, link_delete },
{ "renew", 2, VERB_ANY, 0, link_renew },
+ { "forcerenew", 2, VERB_ANY, 0, link_force_renew },
{ "reconfigure", 2, VERB_ANY, 0, verb_reconfigure },
{ "reload", 1, 1, 0, verb_reload },
{}
diff --git a/src/network/networkd-link-bus.c b/src/network/networkd-link-bus.c
index efb72b60e7..62f84faee3 100644
--- a/src/network/networkd-link-bus.c
+++ b/src/network/networkd-link-bus.c
@@ -572,6 +572,35 @@ int bus_link_method_revert_dns(sd_bus_message *message, void *userdata, sd_bus_e
return sd_bus_reply_method_return(message, NULL);
}
+int bus_link_method_force_renew(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ Link *l = userdata;
+ int r;
+
+ assert(l);
+
+ if (!l->network)
+ return sd_bus_error_setf(error, BUS_ERROR_UNMANAGED_INTERFACE,
+ "Interface %s is not managed by systemd-networkd",
+ l->ifname);
+
+ r = bus_verify_polkit_async(message, CAP_NET_ADMIN,
+ "org.freedesktop.network1.forcerenew",
+ NULL, true, UID_INVALID,
+ &l->manager->polkit_registry, error);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return 1; /* Polkit will call us back */
+
+ if (l->dhcp_server) {
+ r = sd_dhcp_server_forcerenew(l->dhcp_server);
+ if (r < 0)
+ return r;
+ }
+
+ return sd_bus_reply_method_return(message, NULL);
+}
+
int bus_link_method_renew(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Link *l = userdata;
int r;
@@ -651,6 +680,7 @@ const sd_bus_vtable link_vtable[] = {
SD_BUS_METHOD("RevertNTP", NULL, NULL, bus_link_method_revert_ntp, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("RevertDNS", NULL, NULL, bus_link_method_revert_dns, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Renew", NULL, NULL, bus_link_method_renew, SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD("ForceRenew", NULL, NULL, bus_link_method_force_renew, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Reconfigure", NULL, NULL, bus_link_method_reconfigure, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_VTABLE_END
diff --git a/src/network/networkd-link-bus.h b/src/network/networkd-link-bus.h
index 09e4ad68a1..afe0197dbd 100644
--- a/src/network/networkd-link-bus.h
+++ b/src/network/networkd-link-bus.h
@@ -31,4 +31,5 @@ int bus_link_method_set_dnssec_negative_trust_anchors(sd_bus_message *message, v
int bus_link_method_revert_ntp(sd_bus_message *message, void *userdata, sd_bus_error *error);
int bus_link_method_revert_dns(sd_bus_message *message, void *userdata, sd_bus_error *error);
int bus_link_method_renew(sd_bus_message *message, void *userdata, sd_bus_error *error);
+int bus_link_method_force_renew(sd_bus_message *message, void *userdata, sd_bus_error *error);
int bus_link_method_reconfigure(sd_bus_message *message, void *userdata, sd_bus_error *error);
diff --git a/src/network/networkd-manager-bus.c b/src/network/networkd-manager-bus.c
index b7279a582c..e956c5ed9a 100644
--- a/src/network/networkd-manager-bus.c
+++ b/src/network/networkd-manager-bus.c
@@ -191,6 +191,10 @@ static int bus_method_renew_link(sd_bus_message *message, void *userdata, sd_bus
return call_link_method(userdata, message, bus_link_method_renew, error);
}
+static int bus_method_force_renew_link(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return call_link_method(userdata, message, bus_link_method_force_renew, error);
+}
+
static int bus_method_reconfigure_link(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return call_link_method(userdata, message, bus_link_method_reconfigure, error);
}
@@ -249,6 +253,7 @@ const sd_bus_vtable manager_vtable[] = {
SD_BUS_METHOD("RevertLinkNTP", "i", NULL, bus_method_revert_link_ntp, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("RevertLinkDNS", "i", NULL, bus_method_revert_link_dns, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("RenewLink", "i", NULL, bus_method_renew_link, SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD("ForceRenewLink", "i", NULL, bus_method_force_renew_link, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ReconfigureLink", "i", NULL, bus_method_reconfigure_link, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Reload", NULL, NULL, bus_method_reload, SD_BUS_VTABLE_UNPRIVILEGED),
diff --git a/src/network/org.freedesktop.network1.policy b/src/network/org.freedesktop.network1.policy
index 9b1895e657..50b0ef0814 100644
--- a/src/network/org.freedesktop.network1.policy
+++ b/src/network/org.freedesktop.network1.policy
@@ -139,6 +139,17 @@
unix-user:systemd-network
+
+ DHCP server sends force renew message
+ Authentication is required to send force renew message.
+
+ auth_admin
+ auth_admin
+ auth_admin_keep
+
+ unix-user:systemd-network
+
+
Renew dynamic addresses
Authentication is required to renew dynamic addresses.