diff --git a/networkManager.go b/networkManager.go
index 05a0443..5622393 100644
--- a/networkManager.go
+++ b/networkManager.go
@@ -869,5 +869,18 @@ func (nm *networkManager) SetIfaceDNS(ctx context.Context, iface string, servers
 		}
 	}
 
+	// Put the resolvers into effect. Writing them to the profile alone leaves
+	// the running device on whatever it resolved through before, and the
+	// ignore-auto-dns above means that is now nothing at all where the old
+	// resolvers came from a lease -- a device holding an address, a route, and
+	// no way to resolve a name. Unlike turning a DHCP client off, this carries
+	// no risk for a caller connected over the interface: reapply changes the
+	// device in place and does not tear the link down.
+	if len(targets) != 0 {
+		if rerr := reapplyDevice(ctx, iface); rerr != nil {
+			logger.Printf("error applying the connection profile to %s: %v", iface, rerr)
+		}
+	}
+
 	return errors.Join(errs...)
 }
diff --git a/tests/networkManager/results/1/test b/tests/networkManager/results/1/test
index ebc2f46..6d7a0c1 100644
--- a/tests/networkManager/results/1/test
+++ b/tests/networkManager/results/1/test
@@ -4,3 +4,4 @@ connection modify test ipv4.routes 10.253.2.0/24 203.0.113.22 100
 connection modify test ipv6.routes abcd:ef12:3455:10::/64 abcd:ef12:3456:10::1 100
 connection modify test_eth0 ipv4.dns 8.8.8.8,1.1.1.1 ipv4.dns-search example.com ipv4.ignore-auto-dns yes
 connection modify test_eth0 ipv6.dns 2001:4860:4860::8888 ipv6.dns-search example.com ipv6.ignore-auto-dns yes
+device reapply test_eth0
diff --git a/tests/networkManager/results/2/test b/tests/networkManager/results/2/test
index 06ead3b..dda5457 100644
--- a/tests/networkManager/results/2/test
+++ b/tests/networkManager/results/2/test
@@ -4,6 +4,7 @@ connection modify test ipv4.routes 10.253.2.0/24 203.0.113.22 100
 connection modify test ipv6.routes abcd:ef12:3455:10::/64 abcd:ef12:3456:10::1 100
 connection modify test_eth0 ipv4.dns 8.8.8.8,1.1.1.1 ipv4.dns-search example.com ipv4.ignore-auto-dns yes
 connection modify test_eth0 ipv6.dns 2001:4860:4860::8888 ipv6.dns-search example.com ipv6.ignore-auto-dns yes
+device reapply test_eth0
 connection modify test_eth0 ipv4.method auto ipv4.addresses 1.2.10.4/24 ipv4.gateway 1.2.10.254
 connection modify test_eth0 ipv6.method auto ipv6.addresses ipv6.gateway
 connection modify main ipv4.routes