diff --git a/tcp.c b/tcp.c
index 559e271..7d5ac6c 100644
--- a/tcp.c
+++ b/tcp.c
@@ -662,8 +662,7 @@ static int tcp_epoll_ctl(const struct ctx *c, struct tcp_tap_conn *conn)
 {
 	int m = conn->c.in_epoll ? EPOLL_CTL_MOD : EPOLL_CTL_ADD;
 	union epoll_ref ref = { .r.proto = IPPROTO_TCP, .r.s = conn->sock,
-				.r.p.tcp.tcp.index = CONN_IDX(conn),
-				.r.p.tcp.tcp.v6 = CONN_V6(conn) };
+				.r.p.tcp.tcp.index = CONN_IDX(conn) };
 	struct epoll_event ev = { .data.u64 = ref.u64 };
 
 	if (conn->events == CLOSED) {
@@ -2745,7 +2744,7 @@ static void tcp_tap_conn_from_sock(struct ctx *c, union epoll_ref ref,
 	conn->ws_to_tap = conn->ws_from_tap = 0;
 	conn_event(c, conn, SOCK_ACCEPTED);
 
-	if (ref.r.p.tcp.tcp.v6) {
+	if (sa->sa_family == AF_INET6) {
 		struct sockaddr_in6 sa6;
 
 		memcpy(&sa6, sa, sizeof(sa6));
@@ -3019,8 +3018,7 @@ static void tcp_sock_init6(const struct ctx *c,
 			   in_port_t port)
 {
 	in_port_t idx = port + c->tcp.fwd_in.delta[port];
-	union tcp_epoll_ref tref = { .tcp.listen = 1, .tcp.v6 = 1,
-				     .tcp.index = idx };
+	union tcp_epoll_ref tref = { .tcp.listen = 1, .tcp.index = idx };
 	int s;
 
 	s = sock_l4(c, AF_INET6, IPPROTO_TCP, addr, ifname, port, tref.u32);
@@ -3084,7 +3082,7 @@ static void tcp_ns_sock_init6(const struct ctx *c, in_port_t port)
 {
 	in_port_t idx = port + c->tcp.fwd_out.delta[port];
 	union tcp_epoll_ref tref = { .tcp.listen = 1, .tcp.outbound = 1,
-				     .tcp.v6 = 1, .tcp.index = idx };
+				     .tcp.index = idx };
 	int s;
 
 	assert(c->mode == MODE_PASTA);
diff --git a/tcp.h b/tcp.h
index a940682..739b451 100644
--- a/tcp.h
+++ b/tcp.h
@@ -33,7 +33,6 @@ void tcp_update_l2_buf(const unsigned char *eth_d, const unsigned char *eth_s,
  * union tcp_epoll_ref - epoll reference portion for TCP connections
  * @listen:		Set if this file descriptor is a listening socket
  * @outbound:		Listening socket maps to outbound, spliced connection
- * @v6:			Set for IPv6 sockets or connections
  * @timer:		Reference is a timerfd descriptor for connection
  * @index:		Index of connection in table, or port for bound sockets
  * @u32:		Opaque u32 value of reference
@@ -42,7 +41,6 @@ union tcp_epoll_ref {
 	struct {
 		uint32_t	listen:1,
 				outbound:1,
-				v6:1,
 				timer:1,
 				index:20;
 	} tcp;
diff --git a/tcp_splice.c b/tcp_splice.c
index 2be9b77..1bbd085 100644
--- a/tcp_splice.c
+++ b/tcp_splice.c
@@ -167,11 +167,9 @@ static int tcp_splice_epoll_ctl(const struct ctx *c,
 {
 	int m = conn->c.in_epoll ? EPOLL_CTL_MOD : EPOLL_CTL_ADD;
 	union epoll_ref ref_a = { .r.proto = IPPROTO_TCP, .r.s = conn->a,
-				  .r.p.tcp.tcp.index = CONN_IDX(conn),
-				  .r.p.tcp.tcp.v6 = CONN_V6(conn) };
+				  .r.p.tcp.tcp.index = CONN_IDX(conn) };
 	union epoll_ref ref_b = { .r.proto = IPPROTO_TCP, .r.s = conn->b,
-				  .r.p.tcp.tcp.index = CONN_IDX(conn),
-				  .r.p.tcp.tcp.v6 = CONN_V6(conn) };
+				  .r.p.tcp.tcp.index = CONN_IDX(conn) };
 	struct epoll_event ev_a = { .data.u64 = ref_a.u64 };
 	struct epoll_event ev_b = { .data.u64 = ref_b.u64 };
 	uint32_t events_a, events_b;
@@ -517,7 +515,7 @@ bool tcp_splice_conn_from_sock(struct ctx *c, union epoll_ref ref,
 {
 	assert(c->mode == MODE_PASTA);
 
-	if (ref.r.p.tcp.tcp.v6) {
+	if (sa->sa_family == AF_INET6) {
 		const struct sockaddr_in6 *sa6;
 
 		sa6 = (const struct sockaddr_in6 *)sa;