extern int nf_bridge_copy_header(struct sk_buff *skb);
static inline int nf_bridge_maybe_copy_header(struct sk_buff *skb)
{
- if (skb->nf_bridge)
+ if (skb->nf_bridge &&
+ skb->nf_bridge->mask & (BRNF_BRIDGED | BRNF_BRIDGED_DNAT))
return nf_bridge_copy_header(skb);
return 0;
}