diff --git a/phc2sys.8 b/phc2sys.8
index 67b2f27..f5f72b4 100644
--- a/phc2sys.8
+++ b/phc2sys.8
@@ -31,6 +31,8 @@ phc2sys \- synchronize two clocks
 ] [
 .B \-w
 ] [
+.BI \-n " domain-number"
+] [
 .B \-x
 ] [
 .BI \-l " print-level"
@@ -129,6 +131,9 @@ option is not used, also keep the offset between the slave and master
 times updated according to the currentUtcOffset value obtained from ptp4l and
 the direction of the clock synchronization.
 .TP
+.BI \-n " domain-number"
+Specify the domain number used by ptp4l. The default is 0.
+.TP
 .B \-x
 When a leap second is announced, don't apply it in the kernel by stepping the
 clock, but let the servo correct the one-second offset slowly by changing the
diff --git a/phc2sys.c b/phc2sys.c
index ab35fb1..016a565 100644
--- a/phc2sys.c
+++ b/phc2sys.c
@@ -337,9 +337,10 @@ static void *get_mgt_data(struct ptp_message *msg)
 	return mgt->data;
 }
 
-static int init_pmc(struct clock *clock)
+static int init_pmc(struct clock *clock, int domain_number)
 {
-	clock->pmc = pmc_create(TRANS_UDS, "/var/run/phc2sys", 0, 0, 0);
+	clock->pmc = pmc_create(TRANS_UDS, "/var/run/phc2sys", 0,
+				domain_number, 0);
 	if (!clock->pmc) {
 		pr_err("failed to create pmc");
 		return -1;
@@ -525,6 +526,7 @@ static void usage(char *progname)
 		" -O [offset]    slave-master time offset (0)\n"
 		" -u [num]       number of clock updates in summary stats (0)\n"
 		" -w             wait for ptp4l\n"
+		" -n [num]       domain number (0)\n"
 		" -x             apply leap seconds by servo instead of kernel\n"
 		" -l [num]       set the logging level to 'num' (6)\n"
 		" -m             print messages to stdout\n"
@@ -539,7 +541,7 @@ int main(int argc, char *argv[])
 {
 	char *progname, *ethdev = NULL;
 	clockid_t src = CLOCK_INVALID;
-	int c, phc_readings = 5, phc_rate = 1, pps_fd = -1;
+	int c, domain_number = 0, phc_readings = 5, phc_rate = 1, pps_fd = -1;
 	int max_ppb, r, wait_sync = 0, forced_sync_offset = 0;
 	int print_level = LOG_INFO, use_syslog = 1, verbose = 0;
 	double ppb;
@@ -556,7 +558,7 @@ int main(int argc, char *argv[])
 	progname = strrchr(argv[0], '/');
 	progname = progname ? 1+progname : argv[0];
 	while (EOF != (c = getopt(argc, argv,
-				  "c:d:hs:P:I:S:R:N:O:i:u:wxl:mqv"))) {
+				  "c:d:hs:P:I:S:R:N:O:i:u:wn:xl:mqv"))) {
 		switch (c) {
 		case 'c':
 			dst_clock.clkid = clock_open(optarg);
@@ -601,6 +603,9 @@ int main(int argc, char *argv[])
 		case 'w':
 			wait_sync = 1;
 			break;
+		case 'n':
+			domain_number = atoi(optarg);
+			break;
 		case 'x':
 			dst_clock.kernel_leap = 0;
 			break;
@@ -664,7 +669,7 @@ int main(int argc, char *argv[])
 	print_set_level(print_level);
 
 	if (wait_sync) {
-		if (init_pmc(&dst_clock))
+		if (init_pmc(&dst_clock, domain_number))
 			return -1;
 
 		while (1) {