purge_ipsec_spi
purge_ipsec_spi(iph2->dst, iph2->approval->head->proto_id,
purge_ipsec_spi(iph1->remote, delete->proto_id,
purge_ipsec_spi(iph1->remote, delete->proto_id,
extern void purge_ipsec_spi(struct sockaddr *, int, uint32_t *, size_t);