diff --git a/sys/dev/usb/net/if_ure.c b/sys/dev/usb/net/if_ure.c
index c3f7b622d68..3dea88eb10f 100644
--- a/sys/dev/usb/net/if_ure.c
+++ b/sys/dev/usb/net/if_ure.c
@@ -1015,6 +1015,7 @@ ure_attach_post_sub(struct usb_ether *ue)
 	if_sethwassist(ifp, CSUM_IP|CSUM_IP_UDP|CSUM_IP_TCP);
 #ifdef INET6
 	if_setcapabilitiesbit(ifp, IFCAP_HWCSUM_IPV6, 0);
+	if_sethwassistbits(ifp, CSUM_IP6_UDP|CSUM_IP6_TCP, 0);
 #endif
 	if_setcapenable(ifp, if_getcapabilities(ifp));
 
@@ -1463,6 +1464,7 @@ ure_ioctl(if_t ifp, u_long cmd, caddr_t data)
 		if ((mask & IFCAP_TXCSUM) != 0 &&
 		    (if_getcapabilities(ifp) & IFCAP_TXCSUM) != 0) {
 			if_togglecapenable(ifp, IFCAP_TXCSUM);
+			if_togglehwassist(ifp, CSUM_IP|CSUM_IP_UDP|CSUM_IP_TCP);
 		}
 		if ((mask & IFCAP_RXCSUM) != 0 &&
 		    (if_getcapabilities(ifp) & IFCAP_RXCSUM) != 0) {
@@ -1471,6 +1473,7 @@ ure_ioctl(if_t ifp, u_long cmd, caddr_t data)
 		if ((mask & IFCAP_TXCSUM_IPV6) != 0 &&
 		    (if_getcapabilities(ifp) & IFCAP_TXCSUM_IPV6) != 0) {
 			if_togglecapenable(ifp, IFCAP_TXCSUM_IPV6);
+			if_togglehwassist(ifp, CSUM_IP6_UDP|CSUM_IP6_TCP);
 		}
 		if ((mask & IFCAP_RXCSUM_IPV6) != 0 &&
 		    (if_getcapabilities(ifp) & IFCAP_RXCSUM_IPV6) != 0) {