diff --git a/sys/netinet/ip_divert.c b/sys/netinet/ip_divert.c
index 4141386a6a2d..1e738af9b6b9 100644
--- a/sys/netinet/ip_divert.c
+++ b/sys/netinet/ip_divert.c
@@ -218,6 +218,25 @@ divert_packet(struct mbuf *m, bool incoming)
 		in_delayed_cksum(m);
 		m->m_pkthdr.csum_flags &= ~CSUM_DELAY_DATA;
 	}
+#ifdef INET6
+	if (m->m_pkthdr.csum_flags & CSUM_DELAY_DATA_IPV6) {
+		m = mb_unmapped_to_ext(m);
+		if (m == NULL)
+			return;
+		in6_delayed_cksum(m, m->m_pkthdr.len -
+		    sizeof(struct ip6_hdr), sizeof(struct ip6_hdr));
+		m->m_pkthdr.csum_flags &= ~CSUM_DELAY_DATA_IPV6;
+	}
+#if defined(SCTP) || defined(SCTP_SUPPORT)
+	if (m->m_pkthdr.csum_flags & CSUM_SCTP_IPV6) {
+		m = mb_unmapped_to_ext(m);
+		if (m == NULL)
+			return;
+		sctp_delayed_cksum(m, sizeof(struct ip6_hdr));
+		m->m_pkthdr.csum_flags &= ~CSUM_SCTP_IPV6;
+	}
+#endif
+#endif /* INET6 */
 #if defined(SCTP) || defined(SCTP_SUPPORT)
 	if (m->m_pkthdr.csum_flags & CSUM_SCTP) {
 		m = mb_unmapped_to_ext(m);