diff --git a/conf.c b/conf.c
index 6fa5eee..2b9d376 100644
--- a/conf.c
+++ b/conf.c
@@ -1259,7 +1259,7 @@ static void
 parse_hwtimestamp(char *line)
 {
   CNF_HwTsInterface *iface;
-  char *p;
+  char *p, filter[5];
   int n;
 
   if (!*line) {
@@ -1274,6 +1274,7 @@ parse_hwtimestamp(char *line)
   iface->name = Strdup(p);
   iface->minpoll = 0;
   iface->nocrossts = 0;
+  iface->rxfilter = CNF_HWTS_RXFILTER_NTP;
   iface->precision = 100.0e-9;
   iface->tx_comp = 0.0;
   iface->rx_comp = 0.0;
@@ -1293,6 +1294,17 @@ parse_hwtimestamp(char *line)
     } else if (!strcasecmp(p, "txcomp")) {
       if (sscanf(line, "%lf%n", &iface->tx_comp, &n) != 1)
         break;
+    } else if (!strcasecmp(p, "rxfilter")) {
+      if (sscanf(line, "%4s%n", filter, &n) != 1)
+        break;
+      if (!strcasecmp(filter, "none"))
+        iface->rxfilter = CNF_HWTS_RXFILTER_NONE;
+      else if (!strcasecmp(filter, "ntp"))
+        iface->rxfilter = CNF_HWTS_RXFILTER_NTP;
+      else if (!strcasecmp(filter, "all"))
+        iface->rxfilter = CNF_HWTS_RXFILTER_ALL;
+      else
+        break;
     } else if (!strcasecmp(p, "nocrossts")) {
       n = 0;
       iface->nocrossts = 1;
diff --git a/conf.h b/conf.h
index 7128e6e..0dde153 100644
--- a/conf.h
+++ b/conf.h
@@ -118,10 +118,15 @@ extern char *CNF_GetHwclockFile(void);
 extern int CNF_GetInitSources(void);
 extern double CNF_GetInitStepThreshold(void);
 
+#define CNF_HWTS_RXFILTER_NONE 0
+#define CNF_HWTS_RXFILTER_NTP 1
+#define CNF_HWTS_RXFILTER_ALL 2
+
 typedef struct {
   char *name;
   int minpoll;
   int nocrossts;
+  int rxfilter;
   double precision;
   double tx_comp;
   double rx_comp;
diff --git a/ntp_io_linux.c b/ntp_io_linux.c
index 52d0e3a..5a50677 100644
--- a/ntp_io_linux.c
+++ b/ntp_io_linux.c
@@ -152,12 +152,24 @@ add_interface(CNF_HwTsInterface *conf_iface)
 
   ts_config.flags = 0;
   ts_config.tx_type = HWTSTAMP_TX_ON;
+
+  switch (conf_iface->rxfilter) {
+    case CNF_HWTS_RXFILTER_NONE:
+      ts_config.rx_filter = HWTSTAMP_FILTER_NONE;
+      break;
+    case CNF_HWTS_RXFILTER_NTP:
 #ifdef HAVE_LINUX_TIMESTAMPING_RXFILTER_NTP
-  if (ts_info.rx_filters & (1 << HWTSTAMP_FILTER_NTP_ALL))
-    ts_config.rx_filter = HWTSTAMP_FILTER_NTP_ALL;
-  else
+      if (ts_info.rx_filters & (1 << HWTSTAMP_FILTER_NTP_ALL)) {
+        ts_config.rx_filter = HWTSTAMP_FILTER_NTP_ALL;
+        break;
+      }
 #endif
-    ts_config.rx_filter = HWTSTAMP_FILTER_ALL;
+      /* Fall through */
+    default:
+      ts_config.rx_filter = HWTSTAMP_FILTER_ALL;
+      break;
+  }
+
   req.ifr_data = (char *)&ts_config;
 
   if (ioctl(sock_fd, SIOCSHWTSTAMP, &req)) {