NAT_VALID_HOOKS 36 net/bridge/netfilter/ebtable_nat.c .valid_hooks = NAT_VALID_HOOKS, NAT_VALID_HOOKS 48 net/bridge/netfilter/ebtable_nat.c if (valid_hooks & ~NAT_VALID_HOOKS) NAT_VALID_HOOKS 56 net/bridge/netfilter/ebtable_nat.c .valid_hooks = NAT_VALID_HOOKS,