Index: head/sys/dev/vnic/nicvf_queues.c
===================================================================
--- head/sys/dev/vnic/nicvf_queues.c
+++ head/sys/dev/vnic/nicvf_queues.c
@@ -1771,7 +1771,6 @@
 		}
 
 		ip = (struct ip *)(mbuf->m_data + ehdrlen);
-		ip->ip_sum = 0;
 		iphlen = ip->ip_hl << 2;
 		poff = ehdrlen + iphlen;
 
@@ -1984,19 +1983,23 @@
 			/*
 			 * HW by default verifies IP & TCP/UDP/SCTP checksums
 			 */
-
-			/* XXX: Do we need to include IP with options too? */
-			if (__predict_true(cqe_rx->l3_type == L3TYPE_IPV4 ||
-			    cqe_rx->l3_type == L3TYPE_IPV6)) {
+			if (__predict_true(cqe_rx->l3_type == L3TYPE_IPV4)) {
 				mbuf->m_pkthdr.csum_flags =
 				    (CSUM_IP_CHECKED | CSUM_IP_VALID);
 			}
-			if (cqe_rx->l4_type == L4TYPE_TCP ||
-			    cqe_rx->l4_type == L4TYPE_UDP ||
-			    cqe_rx->l4_type == L4TYPE_SCTP) {
+
+			switch (cqe_rx->l4_type) {
+			case L4TYPE_UDP:
+			case L4TYPE_TCP: /* fall through */
 				mbuf->m_pkthdr.csum_flags |=
 				    (CSUM_DATA_VALID | CSUM_PSEUDO_HDR);
-				mbuf->m_pkthdr.csum_data = htons(0xffff);
+				mbuf->m_pkthdr.csum_data = 0xffff;
+				break;
+			case L4TYPE_SCTP:
+				mbuf->m_pkthdr.csum_flags |= CSUM_SCTP_VALID;
+				break;
+			default:
+				break;
 			}
 		}
 	}