PF_PT_PROXY_DST_PORT
snl_add_msg_attr_u16(nw, PF_PT_PROXY_DST_PORT, pool->proxy_port[1]);
{ .type = PF_PT_PROXY_DST_PORT, .off = _OUT(proxy_port[1]), .cb = snl_attr_get_uint16 },
{ .type = PF_PT_PROXY_DST_PORT, .off = _OUT(proxy_port[1]), .cb = nlattr_get_uint16 },
nlattr_add_u16(nw, PF_PT_PROXY_DST_PORT, pool->proxy_port[1]);