[IPV6]: Update parm.link in ip6ip6_tnl_change()

Signed-off-by: NGabor Fekete <gfekete@cc.jyu.fi>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv6/ip6_tunnel.c

@@ -882,6 +882,7 @@ ip6ip6_tnl_change(struct ip6_tnl *t, struct ip6_tnl_parm *p)
 	t->parms.hop_limit = p->hop_limit;
 	t->parms.encap_limit = p->encap_limit;
 	t->parms.flowinfo = p->flowinfo;
+	t->parms.link = p->link;
 	ip6ip6_tnl_link_config(t);
 	return 0;
 }