diff --git a/usr.sbin/sade/sade.h b/usr.sbin/sade/sade.h
index ecbbfc1b129e..a489b857843c 100644
--- a/usr.sbin/sade/sade.h
+++ b/usr.sbin/sade/sade.h
@@ -120,7 +120,6 @@
 #define VAR_GEOMETRY			"geometry"
 #define VAR_HOSTNAME			"hostname"
 #define VAR_IFCONFIG			"ifconfig_"
-#define VAR_INTERFACES			"network_interfaces"
 #define VAR_INSTALL_CFG			"installConfig"
 #define VAR_INSTALL_ROOT		"installRoot"
 #define VAR_IPADDR			"ipaddr"
diff --git a/usr.sbin/sysinstall/sysinstall.h b/usr.sbin/sysinstall/sysinstall.h
index ecbbfc1b129e..a489b857843c 100644
--- a/usr.sbin/sysinstall/sysinstall.h
+++ b/usr.sbin/sysinstall/sysinstall.h
@@ -120,7 +120,6 @@
 #define VAR_GEOMETRY			"geometry"
 #define VAR_HOSTNAME			"hostname"
 #define VAR_IFCONFIG			"ifconfig_"
-#define VAR_INTERFACES			"network_interfaces"
 #define VAR_INSTALL_CFG			"installConfig"
 #define VAR_INSTALL_ROOT		"installRoot"
 #define VAR_IPADDR			"ipaddr"
diff --git a/usr.sbin/sysinstall/tcpip.c b/usr.sbin/sysinstall/tcpip.c
index f466bfe8f9a9..1be52391c9a9 100644
--- a/usr.sbin/sysinstall/tcpip.c
+++ b/usr.sbin/sysinstall/tcpip.c
@@ -515,7 +515,6 @@ tcpOpenDialog(Device *devp)
     if (!cancel) {
 	DevInfo *di;
 	char temp[512], ifn[255];
-	char *ifaces;
 	char *pccard;
 	int ipv4_enable = FALSE;
 
@@ -558,14 +557,6 @@ tcpOpenDialog(Device *devp)
 	if (pccard && strcmp(pccard, "YES") == 0 && ipv4_enable) {
 	    variable_set2("pccard_ifconfig", temp, 1);
 	}
-	ifaces = variable_get(VAR_INTERFACES);
-	if (!ifaces)
-	    variable_set2(VAR_INTERFACES, ifaces = "lo0", 1);
-	/* Only add it if it's not there already */
- 	if (strcmp(ifaces, "auto") && !strstr(ifaces, devp->name)) {
-	    sprintf(ifn, "%s %s", devp->name, ifaces);
-	    variable_set2(VAR_INTERFACES, ifn, 1);
-	}
 	if (use_rtsol)
 	    variable_set2(VAR_IPV6_ENABLE, "YES", 1);
 	if (!use_dhcp)