diff --git a/tools/tools/ifinfo/ifinfo.c b/tools/tools/ifinfo/ifinfo.c
--- a/tools/tools/ifinfo/ifinfo.c
+++ b/tools/tools/ifinfo/ifinfo.c
@@ -149,9 +149,18 @@
 	return retval;
 }
 
+static const char *csum_bits[] = {"CSUM_IP", "CSUM_IP_UDP", "CSUM_IP_TCP",
+    "CSUM_IP_SCTP", "CSUM_IP_TSO", "CSUM_IP_ISCSI", "CSUM_INNER_IP6_UDP",
+    "CSUM_INNER_IP6_TCP", "CSUM_INNER_IP6_TSO", "CSUM_IP6_UDP", "CSUM_IP6_TCP",
+    "CSUM_IP6_SCTP", "CSUM_IP6_TSO", "CSUM_IP6_ISCSI", "CSUM_INNER_IP",
+    "CSUM_INNER_IP_UDP", "CSUM_INNER_IP_TCP", "CSUM_INNER_IP_TSO",
+    "CSUM_ENCAP_VXLAN", "CSUM_ENCAP_RSVD1"};
+
 static void
 printit(const struct ifmibdata *ifmd, const char *dname)
 {
+	int i, first;
+
 	printf("Interface %.*s", IFNAMSIZ, ifmd->ifmd_name);
 	if (dname != NULL)
 		printf(" (%s)", dname);
@@ -182,8 +191,24 @@
 	printf("\tinput queue drops: %lu\n", ifmd->ifmd_data.ifi_iqdrops);
 	printf("\tpackets for unknown protocol: %lu\n",
 	       ifmd->ifmd_data.ifi_noproto);
-	printf("\tHW offload capabilities: 0x%lx\n",
+	printf("\tHW offload capabilities: 0x%lx",
 	    ifmd->ifmd_data.ifi_hwassist);
+	first = 1;
+	for (i = 0; i < (int)(sizeof(csum_bits) / sizeof(char *)); i++) {
+		if ((ifmd->ifmd_data.ifi_hwassist & (1 << i)) != 0) {
+			if (first == 1) {
+				printf("<");
+				first = 0;
+			} else {
+				printf(",");
+			}
+			printf("%s", csum_bits[i]);
+		}
+	}
+	if (first == 0) {
+		printf(">");
+	}
+	printf("\n");
 	printf("\tuptime at attach or stat reset: %lu\n",
 	    ifmd->ifmd_data.ifi_epoch);
 #ifdef notdef