--- iproute2-4.20.0/ip/ipmonitor.c
+++ iproute2-4.20.0/ip/ipmonitor.c
@@ -118,7 +118,6 @@
 
 	case RTM_NEWPREFIX:
 		print_headers(fp, "[PREFIX]", ctrl);
-		print_prefix(n, arg);
 		return 0;
 
 	case RTM_NEWRULE:
--- iproute2-4.20.0/ip/iptunnel.c
+++ iproute2-4.20.0/ip/iptunnel.c
@@ -549,13 +549,6 @@
 		break;
 	case AF_INET:
 		break;
-	/*
-	 * This is silly enough but we have no easy way to make it
-	 * protocol-independent because of unarranged structure between
-	 * IPv4 and IPv6.
-	 */
-	case AF_INET6:
-		return do_ip6tunnel(argc, argv);
 	default:
 		fprintf(stderr, "Unsupported protocol family: %d\n", preferred_family);
 		exit(-1);
--- iproute2-4.20.0/ip/Makefile
+++ iproute2-4.20.0/ip/Makefile
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 IPOBJ=ip.o ipaddress.o ipaddrlabel.o iproute.o iprule.o ipnetns.o \
-    rtm_map.o iptunnel.o ip6tunnel.o tunnel.o ipneigh.o ipntable.o iplink.o \
-    ipmaddr.o ipmonitor.o ipmroute.o ipprefix.o iptuntap.o iptoken.o \
+    rtm_map.o iptunnel.o tunnel.o ipneigh.o ipntable.o iplink.o \
+    ipmaddr.o ipmonitor.o ipmroute.o iptuntap.o iptoken.o \
     ipxfrm.o xfrm_state.o xfrm_policy.o xfrm_monitor.o iplink_dummy.o \
     iplink_ifb.o iplink_nlmon.o iplink_team.o iplink_vcan.o iplink_vxcan.o \
     iplink_vlan.o link_veth.o link_gre.o iplink_can.o iplink_xdp.o \