diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index ac912bb21747..e79854cc5790 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -1087,6 +1087,7 @@ static void ipip6_tunnel_update(struct ip_tunnel *t, struct ip_tunnel_parm *p,
 	ipip6_tunnel_link(sitn, t);
 	t->parms.iph.ttl = p->iph.ttl;
 	t->parms.iph.tos = p->iph.tos;
+	t->parms.iph.frag_off = p->iph.frag_off;
 	if (t->parms.link != p->link || t->fwmark != fwmark) {
 		t->parms.link = p->link;
 		t->fwmark = fwmark;