From e61ac7cd2731336f8bfb8d68dc492cc3178f4c54 Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Mon, 18 May 2026 08:40:44 +0900
Subject: [PATCH] network/address: drop duplicated address earlier

network_adjust_dhcp_server() searches network->addresses_by_section,
hence without this change, an address entry picked by
network_adjust_dhcp_server() may be detached and freed by the cleanup
function.
---
 src/network/networkd-address.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/network/networkd-address.c b/src/network/networkd-address.c
index 01eef634f4..193c4a04b5 100644
--- a/src/network/networkd-address.c
+++ b/src/network/networkd-address.c
@@ -2478,6 +2478,9 @@ int network_drop_invalid_addresses(Network *network) {
                 assert(r > 0);
         }
 
+        /* Detach duplicated entries now. */
+        duplicated_addresses = set_free(duplicated_addresses);
+
         r = network_adjust_dhcp_server(network, &addresses);
         if (r < 0)
                 return r;