diff --git a/src/core/devices/wwan/nm-modem-broadband.c b/src/core/devices/wwan/nm-modem-broadband.c
index f5336d375..b585652e5 100644
--- a/src/core/devices/wwan/nm-modem-broadband.c
+++ b/src/core/devices/wwan/nm-modem-broadband.c
@@ -1032,6 +1032,7 @@ stage3_ip_config_start(NMModem *modem, int addr_family, NMModemIPMethod ip_metho
         l3cd = nm_l3_config_data_new(nm_platform_get_multi_idx(NM_PLATFORM_GET),
                                      ifindex,
                                      NM_IP_CONFIG_SOURCE_WWAN);
+        nm_l3_config_data_set_dns_priority(l3cd, AF_INET, 0);
 
         address = (NMPlatformIP4Address){
             .address      = address_network,
@@ -1118,6 +1119,7 @@ stage3_ip_config_start(NMModem *modem, int addr_family, NMModemIPMethod ip_metho
         l3cd = nm_l3_config_data_new(nm_platform_get_multi_idx(NM_PLATFORM_GET),
                                      ifindex,
                                      NM_IP_CONFIG_SOURCE_WWAN);
+        nm_l3_config_data_set_dns_priority(l3cd, AF_INET6, 0);
 
         do_auto = TRUE;
 
diff --git a/src/core/ppp/nm-ppp-manager.c b/src/core/ppp/nm-ppp-manager.c
index 213e3761c..896c233d6 100644
--- a/src/core/ppp/nm-ppp-manager.c
+++ b/src/core/ppp/nm-ppp-manager.c
@@ -545,6 +545,7 @@ impl_ppp_manager_set_ip4_config(NMDBusObject                      *obj,
                                  NM_IP_CONFIG_SOURCE_PPP);
 
     nm_l3_config_data_set_mtu(l3cd, mtu);
+    nm_l3_config_data_set_dns_priority(l3cd, AF_INET, 0);
 
     address = (NMPlatformIP4Address){
         .plen = 32,