diff --git a/arp.c b/arp.c
index 141d43f..930b9ea 100644
--- a/arp.c
+++ b/arp.c
@@ -24,6 +24,7 @@
 #include <string.h>
 
 #include "util.h"
+#include "log.h"
 #include "arp.h"
 #include "dhcp.h"
 #include "passt.h"
@@ -43,6 +44,7 @@ int arp(const struct ctx *c, const struct pool *p)
 	struct arphdr *ah;
 	struct arpmsg *am;
 	size_t len;
+	int ret;
 
 	eh = packet_get(p, 0, 0,			 sizeof(*eh), NULL);
 	ah = packet_get(p, 0, sizeof(*eh),		 sizeof(*ah), NULL);
@@ -81,8 +83,8 @@ int arp(const struct ctx *c, const struct pool *p)
 	memcpy(eh->h_dest,	eh->h_source,	sizeof(eh->h_dest));
 	memcpy(eh->h_source,	c->mac,		sizeof(eh->h_source));
 
-	if (tap_send(c, eh, len) < 0)
-		perror("ARP: send");
+	if ((ret = tap_send(c, eh, len)) < 0)
+		warn("ARP: send: %s", strerror(ret));
 
 	return 1;
 }
diff --git a/tap.c b/tap.c
index abeff25..b7ac996 100644
--- a/tap.c
+++ b/tap.c
@@ -899,7 +899,7 @@ static void tap_sock_unix_init(struct ctx *c)
 	int i;
 
 	if (fd < 0) {
-		perror("UNIX socket");
+		err("UNIX socket: %s", strerror(errno));
 		exit(EXIT_FAILURE);
 	}
 
@@ -920,7 +920,7 @@ static void tap_sock_unix_init(struct ctx *c)
 
 		ex = socket(AF_UNIX, SOCK_STREAM | SOCK_NONBLOCK, 0);
 		if (ex < 0) {
-			perror("UNIX domain socket check");
+			err("UNIX domain socket check: %s", strerror(errno));
 			exit(EXIT_FAILURE);
 		}
 
@@ -944,7 +944,7 @@ static void tap_sock_unix_init(struct ctx *c)
 	}
 
 	if (i == UNIX_SOCK_MAX) {
-		perror("UNIX socket bind");
+		err("UNIX socket bind: %s", strerror(errno));
 		exit(EXIT_FAILURE);
 	}
 
diff --git a/util.c b/util.c
index 514bd44..be102e3 100644
--- a/util.c
+++ b/util.c
@@ -125,7 +125,7 @@ int sock_l4(const struct ctx *c, int af, uint8_t proto,
 		fd = socket(af, SOCK_DGRAM | SOCK_NONBLOCK, proto);
 
 	if (fd < 0) {
-		perror("L4 socket");
+		warn("L4 socket: %s", strerror(errno));
 		return -1;
 	}
 
@@ -193,7 +193,7 @@ int sock_l4(const struct ctx *c, int af, uint8_t proto,
 	}
 
 	if (proto == IPPROTO_TCP && listen(fd, 128) < 0) {
-		perror("TCP socket listen");
+		warn("TCP socket listen: %s", strerror(errno));
 		close(fd);
 		return -1;
 	}
@@ -201,7 +201,7 @@ int sock_l4(const struct ctx *c, int af, uint8_t proto,
 	ev.events = EPOLLIN;
 	ev.data.u64 = ref.u64;
 	if (epoll_ctl(c->epollfd, EPOLL_CTL_ADD, fd, &ev) == -1) {
-		perror("L4 epoll_ctl");
+		warn("L4 epoll_ctl: %s", strerror(errno));
 		return -1;
 	}