diff --git a/icmp.c b/icmp.c
index 220dcd1..76bb9e9 100644
--- a/icmp.c
+++ b/icmp.c
@@ -49,19 +49,19 @@
 #define	SOCKSIDE	0
 #define	TAPSIDE		1
 
+#define PINGF(idx)		(&(FLOW(idx)->ping))
+
 /* Indexed by ICMP echo identifier */
 static struct icmp_ping_flow *icmp_id_map[IP_VERSIONS][ICMP_NUM_IDS];
 
 /**
  * icmp_sock_handler() - Handle new data from ICMP or ICMPv6 socket
  * @c:		Execution context
- * @af:		Address family (AF_INET or AF_INET6)
  * @ref:	epoll reference
  */
-void icmp_sock_handler(const struct ctx *c, sa_family_t af, union epoll_ref ref)
+void icmp_sock_handler(const struct ctx *c, union epoll_ref ref)
 {
-	struct icmp_ping_flow *pingf = af == AF_INET
-		? icmp_id_map[V4][ref.icmp.id] : icmp_id_map[V6][ref.icmp.id];
+	struct icmp_ping_flow *pingf = PINGF(ref.flowside.flow);
 	union sockaddr_inany sr;
 	socklen_t sl = sizeof(sr);
 	char buf[USHRT_MAX];
@@ -78,27 +78,26 @@ void icmp_sock_handler(const struct ctx *c, sa_family_t af, union epoll_ref ref)
 		flow_err(pingf, "recvfrom() error: %s", strerror(errno));
 		return;
 	}
-	if (sr.sa_family != af)
-		goto unexpected;
 
-	if (af == AF_INET) {
+	if (pingf->f.type == FLOW_PING4) {
 		struct icmphdr *ih4 = (struct icmphdr *)buf;
 
-		if ((size_t)n < sizeof(*ih4) || ih4->type != ICMP_ECHOREPLY)
+		if (sr.sa_family != AF_INET || (size_t)n < sizeof(*ih4) ||
+		    ih4->type != ICMP_ECHOREPLY)
 			goto unexpected;
 
 		/* Adjust packet back to guest-side ID */
-		ih4->un.echo.id = htons(ref.icmp.id);
+		ih4->un.echo.id = htons(pingf->id);
 		seq = ntohs(ih4->un.echo.sequence);
-	} else if (af == AF_INET6) {
+	} else if (pingf->f.type == FLOW_PING6) {
 		struct icmp6hdr *ih6 = (struct icmp6hdr *)buf;
 
-		if ((size_t)n < sizeof(*ih6) ||
+		if (sr.sa_family != AF_INET6 || (size_t)n < sizeof(*ih6) ||
 		    ih6->icmp6_type != ICMPV6_ECHO_REPLY)
 			goto unexpected;
 
 		/* Adjust packet back to guest-side ID */
-		ih6->icmp6_identifier = htons(ref.icmp.id);
+		ih6->icmp6_identifier = htons(pingf->id);
 		seq = ntohs(ih6->icmp6_sequence);
 	} else {
 		ASSERT(0);
@@ -113,11 +112,11 @@ void icmp_sock_handler(const struct ctx *c, sa_family_t af, union epoll_ref ref)
 	}
 
 	flow_dbg(pingf, "echo reply to tap, ID: %"PRIu16", seq: %"PRIu16,
-		 ref.icmp.id, seq);
+		 pingf->id, seq);
 
-	if (af == AF_INET)
+	if (pingf->f.type == FLOW_PING4)
 		tap_icmp4_send(c, sr.sa4.sin_addr, tap_ip4_daddr(c), buf, n);
-	else if (af == AF_INET6)
+	else if (pingf->f.type == FLOW_PING6)
 		tap_icmp6_send(c, &sr.sa6.sin6_addr,
 			       tap_ip6_daddr(c, &sr.sa6.sin6_addr), buf, n);
 	return;
@@ -159,7 +158,7 @@ static struct icmp_ping_flow *icmp_ping_new(const struct ctx *c,
 					    sa_family_t af, uint16_t id)
 {
 	uint8_t flowtype = af == AF_INET ? FLOW_PING4 : FLOW_PING6;
-	union icmp_epoll_ref iref = { .id = id };
+	union epoll_ref ref = { .type = EPOLL_TYPE_PING };
 	union flow *flow = flow_alloc();
 	struct icmp_ping_flow *pingf;
 	const void *bind_addr;
@@ -181,8 +180,9 @@ static struct icmp_ping_flow *icmp_ping_new(const struct ctx *c,
 		bind_if = c->ip6.ifname_out;
 	}
 
+	ref.flowside = FLOW_SIDX(flow, SOCKSIDE);
 	pingf->sock = sock_l4(c, af, flow_proto[flowtype], bind_addr, bind_if,
-			      0, iref.u32);
+			      0, ref.data);
 
 	if (pingf->sock < 0) {
 		warn("Cannot open \"ping\" socket. You might need to:");
diff --git a/icmp.h b/icmp.h
index 4f695da..5ce22b5 100644
--- a/icmp.h
+++ b/icmp.h
@@ -11,23 +11,12 @@
 struct ctx;
 struct icmp_ping_flow;
 
-void icmp_sock_handler(const struct ctx *c, sa_family_t af, union epoll_ref ref);
+void icmp_sock_handler(const struct ctx *c, union epoll_ref ref);
 int icmp_tap_handler(const struct ctx *c, uint8_t pif, sa_family_t af,
 		     const void *saddr, const void *daddr,
 		     const struct pool *p, const struct timespec *now);
 void icmp_init(void);
 
-/**
- * union icmp_epoll_ref - epoll reference portion for ICMP tracking
- * @v6:			Set for IPv6 sockets or connections
- * @u32:		Opaque u32 value of reference
- * @id:			Associated echo identifier, needed if bind() fails
- */
-union icmp_epoll_ref {
-	uint16_t id;
-	uint32_t u32;
-};
-
 /**
  * struct icmp_ctx - Execution context for ICMP routines
  * @timer_run:		Timestamp of most recent timer run
diff --git a/passt.c b/passt.c
index 0f79492..f430648 100644
--- a/passt.c
+++ b/passt.c
@@ -66,8 +66,7 @@ char *epoll_type_str[] = {
 	[EPOLL_TYPE_TCP_LISTEN]		= "listening TCP socket",
 	[EPOLL_TYPE_TCP_TIMER]		= "TCP timer",
 	[EPOLL_TYPE_UDP]		= "UDP socket",
-	[EPOLL_TYPE_ICMP]		= "ICMP socket",
-	[EPOLL_TYPE_ICMPV6]		= "ICMPv6 socket",
+	[EPOLL_TYPE_PING]	= "ICMP/ICMPv6 ping socket",
 	[EPOLL_TYPE_NSQUIT_INOTIFY]	= "namespace inotify watch",
 	[EPOLL_TYPE_NSQUIT_TIMER]	= "namespace timer watch",
 	[EPOLL_TYPE_TAP_PASTA]		= "/dev/net/tun device",
@@ -377,11 +376,8 @@ loop:
 		case EPOLL_TYPE_UDP:
 			udp_sock_handler(&c, ref, eventmask, &now);
 			break;
-		case EPOLL_TYPE_ICMP:
-			icmp_sock_handler(&c, AF_INET, ref);
-			break;
-		case EPOLL_TYPE_ICMPV6:
-			icmp_sock_handler(&c, AF_INET6, ref);
+		case EPOLL_TYPE_PING:
+			icmp_sock_handler(&c, ref);
 			break;
 		default:
 			/* Can't happen */
diff --git a/passt.h b/passt.h
index e6d4358..76026f0 100644
--- a/passt.h
+++ b/passt.h
@@ -59,10 +59,8 @@ enum epoll_type {
 	EPOLL_TYPE_TCP_TIMER,
 	/* UDP sockets */
 	EPOLL_TYPE_UDP,
-	/* IPv4 ICMP sockets */
-	EPOLL_TYPE_ICMP,
-	/* ICMPv6 sockets */
-	EPOLL_TYPE_ICMPV6,
+	/* ICMP/ICMPv6 ping sockets */
+	EPOLL_TYPE_PING,
 	/* inotify fd watching for end of netns (pasta) */
 	EPOLL_TYPE_NSQUIT_INOTIFY,
 	/* timer fd watching for end of netns, fallback for inotify (pasta) */
@@ -100,7 +98,6 @@ union epoll_ref {
 			flow_sidx_t flowside;
 			union tcp_listen_epoll_ref tcp_listen;
 			union udp_epoll_ref udp;
-			union icmp_epoll_ref icmp;
 			uint32_t data;
 			int nsdir_fd;
 		};
diff --git a/util.c b/util.c
index bac5a53..3b2393d 100644
--- a/util.c
+++ b/util.c
@@ -72,10 +72,8 @@ int sock_l4(const struct ctx *c, sa_family_t af, uint8_t proto,
 		ref.type = EPOLL_TYPE_UDP;
 		break;
 	case IPPROTO_ICMP:
-		ref.type = EPOLL_TYPE_ICMP;
-		break;
 	case IPPROTO_ICMPV6:
-		ref.type = EPOLL_TYPE_ICMPV6;
+		ref.type = EPOLL_TYPE_PING;
 		break;
 	default:
 		return -EPFNOSUPPORT;	/* Not implemented. */