network: update state file when DHCPv6 reply for INFORMATION-REQUEST is received

Otherwise, received information, e.g. DNS servers, may not be saved in
the state file, and will not be propagated to clients like resolved.

Fixes the first issue of #29678.

diff --git a/src/network/networkd-dhcp6.c b/src/network/networkd-dhcp6.c
index 6044411a75f6f7ee9290efeb633302b90c6fc8f6..0aa56bffbc7c6726ab6b8a9baaa1ace3db3fba93 100644 (file)
--- a/src/network/networkd-dhcp6.c
+++ b/src/network/networkd-dhcp6.c
@@ -16,6 +16,7 @@
 #include "networkd-manager.h"
 #include "networkd-queue.h"
 #include "networkd-route.h"
+#include "networkd-state-file.h"
 #include "string-table.h"
 #include "string-util.h"
 
@@ -351,7 +352,10 @@ static int dhcp6_lease_information_acquired(sd_dhcp6_client *client, Link *link)
         if (r < 0)
                 return log_link_error_errno(link, r, "Failed to get DHCPv6 lease: %m");
 
-        return unref_and_replace_full(link->dhcp6_lease, lease, sd_dhcp6_lease_ref, sd_dhcp6_lease_unref);
+        unref_and_replace_full(link->dhcp6_lease, lease, sd_dhcp6_lease_ref, sd_dhcp6_lease_unref);
+
+        link_dirty(link);
+        return 0;
 }
 
 static int dhcp6_lease_lost(Link *link) {