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-rw-r--r--src/resolve/resolved-resolv-conf.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/resolve/resolved-resolv-conf.c b/src/resolve/resolved-resolv-conf.c
index 63bde1c2f4..956f380f3c 100644
--- a/src/resolve/resolved-resolv-conf.c
+++ b/src/resolve/resolved-resolv-conf.c
@@ -129,6 +129,15 @@ int manager_read_resolv_conf(Manager *m) {
* resolve VPN domains. */
manager_set_dns_server(m, m->dns_servers);
+ /* Unconditionally flush the cache when /etc/resolv.conf is
+ * modified, even if the data it contained was completely
+ * identical to the previous version we used. We do this
+ * because altering /etc/resolv.conf is typically done when
+ * the network configuration changes, and that should be
+ * enough to flush the global unicast DNS cache. */
+ if (m->unicast_scope)
+ dns_cache_flush(&m->unicast_scope->cache);
+
return 0;
clear: