diff --git a/etherip6ctl.c b/etherip6ctl.c
deleted file mode 100644
index 8be3f06..0000000
--- a/etherip6ctl.c
+++ /dev/null
@@ -1,240 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <arpa/inet.h>
-#include <errno.h>
-#include <linux/if_link.h>
-#include <linux/netlink.h>
-#include <linux/rtnetlink.h>
-#include <net/if.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/socket.h>
-#include <unistd.h>
-
-#include "etherip6_uapi.h"
-
-#define BUF_SIZE 8192
-
-static void usage(const char *prog)
-{
-	fprintf(stderr,
-		"usage:\n"
-		"  %s add DEV local ADDR remote ADDR [link IFACE] [hoplimit N]\n"
-		"  %s del DEV\n",
-		prog, prog);
-}
-
-static void addattr(struct nlmsghdr *nlh, size_t maxlen, int type,
-		    const void *data, size_t len)
-{
-	struct nlattr *nla;
-	size_t nla_len = NLA_HDRLEN + len;
-	size_t new_len = NLMSG_ALIGN(nlh->nlmsg_len) + NLA_ALIGN(nla_len);
-
-	if (new_len > maxlen) {
-		fprintf(stderr, "netlink message too large\n");
-		exit(1);
-	}
-
-	nla = (struct nlattr *)((char *)nlh + NLMSG_ALIGN(nlh->nlmsg_len));
-	nla->nla_type = type;
-	nla->nla_len = nla_len;
-	memcpy((char *)nla + NLA_HDRLEN, data, len);
-	nlh->nlmsg_len = new_len;
-}
-
-static struct nlattr *nest_start(struct nlmsghdr *nlh, size_t maxlen, int type)
-{
-	struct nlattr *nla;
-
-	addattr(nlh, maxlen, type, NULL, 0);
-	nla = (struct nlattr *)((char *)nlh + NLMSG_ALIGN(nlh->nlmsg_len) -
-				NLA_ALIGN(NLA_HDRLEN));
-	return nla;
-}
-
-static void nest_end(struct nlmsghdr *nlh, struct nlattr *nla)
-{
-	nla->nla_len = (char *)nlh + nlh->nlmsg_len - (char *)nla;
-}
-
-static void addattr_string(struct nlmsghdr *nlh, size_t maxlen, int type,
-			   const char *str)
-{
-	addattr(nlh, maxlen, type, str, strlen(str) + 1);
-}
-
-static int rtnl_talk(struct nlmsghdr *nlh)
-{
-	struct sockaddr_nl sa = { .nl_family = AF_NETLINK };
-	char buf[BUF_SIZE];
-	struct iovec iov = { .iov_base = nlh, .iov_len = nlh->nlmsg_len };
-	struct msghdr msg = { .msg_name = &sa, .msg_namelen = sizeof(sa),
-			      .msg_iov = &iov, .msg_iovlen = 1 };
-	int fd, ret;
-
-	fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
-	if (fd < 0)
-		return -1;
-
-	nlh->nlmsg_seq = 1;
-	if (sendmsg(fd, &msg, 0) < 0) {
-		ret = -1;
-		goto out;
-	}
-
-	ret = recv(fd, buf, sizeof(buf), 0);
-	if (ret < 0)
-		goto out;
-
-	for (nlh = (struct nlmsghdr *)buf; NLMSG_OK(nlh, ret);
-	     nlh = NLMSG_NEXT(nlh, ret)) {
-		if (nlh->nlmsg_type == NLMSG_ERROR) {
-			struct nlmsgerr *err = NLMSG_DATA(nlh);
-
-			if (err->error) {
-				errno = -err->error;
-				ret = -1;
-			} else {
-				ret = 0;
-			}
-			goto out;
-		}
-	}
-
-	ret = 0;
-out:
-	close(fd);
-	return ret;
-}
-
-static int cmd_add(int argc, char **argv)
-{
-	char buf[BUF_SIZE] = {};
-	struct nlmsghdr *nlh = (struct nlmsghdr *)buf;
-	struct ifinfomsg *ifi;
-	struct nlattr *linkinfo, *infodata;
-	struct in6_addr local = {}, remote = {};
-	uint32_t link = 0;
-	uint8_t hoplimit = 64;
-	bool have_local = false, have_remote = false;
-	const char *dev;
-	int i;
-
-	if (argc < 7) {
-		usage(argv[0]);
-		return 1;
-	}
-
-	dev = argv[2];
-	for (i = 3; i < argc; i++) {
-		if (!strcmp(argv[i], "local") && i + 1 < argc) {
-			if (inet_pton(AF_INET6, argv[++i], &local) != 1) {
-				fprintf(stderr, "invalid local IPv6 address\n");
-				return 1;
-			}
-			have_local = true;
-		} else if (!strcmp(argv[i], "remote") && i + 1 < argc) {
-			if (inet_pton(AF_INET6, argv[++i], &remote) != 1) {
-				fprintf(stderr, "invalid remote IPv6 address\n");
-				return 1;
-			}
-			have_remote = true;
-		} else if (!strcmp(argv[i], "link") && i + 1 < argc) {
-			link = if_nametoindex(argv[++i]);
-			if (!link) {
-				perror("if_nametoindex");
-				return 1;
-			}
-		} else if (!strcmp(argv[i], "hoplimit") && i + 1 < argc) {
-			unsigned long v = strtoul(argv[++i], NULL, 0);
-
-			if (!v || v > 255) {
-				fprintf(stderr, "hoplimit must be 1..255\n");
-				return 1;
-			}
-			hoplimit = (uint8_t)v;
-		} else {
-			usage(argv[0]);
-			return 1;
-		}
-	}
-
-	if (!have_local || !have_remote) {
-		usage(argv[0]);
-		return 1;
-	}
-
-	nlh->nlmsg_len = NLMSG_LENGTH(sizeof(*ifi));
-	nlh->nlmsg_type = RTM_NEWLINK;
-	nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | NLM_F_CREATE | NLM_F_EXCL;
-	ifi = NLMSG_DATA(nlh);
-	ifi->ifi_family = AF_UNSPEC;
-
-	addattr_string(nlh, sizeof(buf), IFLA_IFNAME, dev);
-	linkinfo = nest_start(nlh, sizeof(buf), IFLA_LINKINFO);
-	addattr_string(nlh, sizeof(buf), IFLA_INFO_KIND, "etherip6");
-	infodata = nest_start(nlh, sizeof(buf), IFLA_INFO_DATA);
-	addattr(nlh, sizeof(buf), IFLA_ETHERIP6_LOCAL, &local, sizeof(local));
-	addattr(nlh, sizeof(buf), IFLA_ETHERIP6_REMOTE, &remote, sizeof(remote));
-	if (link)
-		addattr(nlh, sizeof(buf), IFLA_ETHERIP6_LINK, &link, sizeof(link));
-	addattr(nlh, sizeof(buf), IFLA_ETHERIP6_HOP_LIMIT, &hoplimit, sizeof(hoplimit));
-	nest_end(nlh, infodata);
-	nest_end(nlh, linkinfo);
-
-	if (rtnl_talk(nlh) < 0) {
-		perror("RTM_NEWLINK");
-		return 1;
-	}
-
-	return 0;
-}
-
-static int cmd_del(int argc, char **argv)
-{
-	char buf[BUF_SIZE] = {};
-	struct nlmsghdr *nlh = (struct nlmsghdr *)buf;
-	struct ifinfomsg *ifi;
-
-	if (argc != 3) {
-		usage(argv[0]);
-		return 1;
-	}
-
-	nlh->nlmsg_len = NLMSG_LENGTH(sizeof(*ifi));
-	nlh->nlmsg_type = RTM_DELLINK;
-	nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
-	ifi = NLMSG_DATA(nlh);
-	ifi->ifi_family = AF_UNSPEC;
-	ifi->ifi_index = if_nametoindex(argv[2]);
-	if (!ifi->ifi_index) {
-		perror("if_nametoindex");
-		return 1;
-	}
-
-	if (rtnl_talk(nlh) < 0) {
-		perror("RTM_DELLINK");
-		return 1;
-	}
-
-	return 0;
-}
-
-int main(int argc, char **argv)
-{
-	if (argc < 2) {
-		usage(argv[0]);
-		return 1;
-	}
-
-	if (!strcmp(argv[1], "add"))
-		return cmd_add(argc, argv);
-	if (!strcmp(argv[1], "del"))
-		return cmd_del(argc, argv);
-
-	usage(argv[0]);
-	return 1;
-}