SADB_X_EXT_IFACE
sa_iface.sadb_x_iface_exttype = SADB_X_EXT_IFACE;
{ SADB_X_EXT_IFACE, "interface", print_iface },
siface->sadb_x_iface_exttype = SADB_X_EXT_IFACE;
import_iface(newsa, headers[SADB_X_EXT_IFACE]);
import_iface(sa2, headers[SADB_X_EXT_IFACE]);
import_iface(newsa, headers[SADB_X_EXT_IFACE]);
headers[SADB_X_EXT_IFACE] = p;
#define BITMAP_X_IFACE (1LL << SADB_X_EXT_IFACE)
case SADB_X_EXT_IFACE: