diff --git a/clock.c b/clock.c
index 354f038..da15882 100644
--- a/clock.c
+++ b/clock.c
@@ -31,7 +31,6 @@
 #include "clockcheck.h"
 #include "foreign.h"
 #include "filter.h"
-#include "hash.h"
 #include "missing.h"
 #include "msg.h"
 #include "phc.h"
@@ -39,7 +38,6 @@
 #include "servo.h"
 #include "stats.h"
 #include "print.h"
-#include "sk.h"
 #include "tlv.h"
 #include "tsproc.h"
 #include "uds.h"
@@ -96,7 +94,6 @@ struct clock {
 	int nports; /* does not include the UDS port */
 	int last_port_number;
 	int sde;
-	struct hash *index2port;
 	int free_running;
 	int freq_est_interval;
 	int grand_master_capable; /* for 802.1AS only */
@@ -275,7 +272,6 @@ void clock_destroy(struct clock *c)
 	}
 	port_close(c->uds_port);
 	free(c->pollfd);
-	hash_destroy(c->index2port, NULL);
 	if (c->clkid != CLOCK_REALTIME) {
 		phc_close(c->clkid);
 	}
@@ -773,8 +769,6 @@ static int clock_add_port(struct clock *c, int phc_index,
 			  struct interface *iface)
 {
 	struct port *p, *piter, *lastp = NULL;
-	int fd, index;
-	char key[16];
 
 	if (clock_resize_pollfd(c, c->nports + 1)) {
 		return -1;
@@ -795,24 +789,6 @@ static int clock_add_port(struct clock *c, int phc_index,
 	c->nports++;
 	clock_fda_changed(c);
 
-	/* Remember the index to port mapping, for link status tracking. */
-	fd = sk_interface_fd();
-	if (fd < 0) {
-		return -1;
-	}
-	index = sk_interface_index(fd, iface->name);
-	if (index < 0) {
-		close(fd);
-		return -1;
-	}
-	snprintf(key, sizeof(key), "%d", index);
-	if (hash_insert(c->index2port, key, p)) {
-		pr_err("failed to add port with index %d twice!", index);
-		close(fd);
-		return -1;
-	}
-	close(fd);
-
 	return 0;
 }
 
@@ -1113,11 +1089,6 @@ struct clock *clock_create(enum clock_type type, struct config *config,
 	}
 	clock_fda_changed(c);
 
-	c->index2port = hash_create();
-	if (!c->index2port) {
-		pr_err("failed create index-to-port hash table");
-		return NULL;
-	}
 	/* Create the ports. */
 	STAILQ_FOREACH(iface, &config->interfaces, list) {
 		if (clock_add_port(c, phc_index, timestamping, iface)) {